{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_0062d920d09849ea571a055c.png", "id": "gf_0062d920d09849ea571a055c", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_38c9f995fb76b0d24a12056b", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_0062d920d09849ea571a055c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_00b2a97b6bf6d0c5ae4b7bc1.png", "id": "gf_00b2a97b6bf6d0c5ae4b7bc1", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5894b207166b3bf4007af043", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_00b2a97b6bf6d0c5ae4b7bc1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_00c700b6866bf4a1103cd870.png", "id": "gf_00c700b6866bf4a1103cd870", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_97b82236a4b7bcabfb29c1dc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_00c700b6866bf4a1103cd870.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_0109cab9ebd35a419bf0469f.png", "id": "gf_0109cab9ebd35a419bf0469f", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5894b207166b3bf4007af043", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_0109cab9ebd35a419bf0469f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_014c3c49ca04be2332b30d2b.png", "id": "gf_014c3c49ca04be2332b30d2b", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_6db6bfb4225068486840627a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_014c3c49ca04be2332b30d2b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_01845ca432a7ac989d601d86.png", "id": "gf_01845ca432a7ac989d601d86", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_c2d80cba349338bc5e403cf0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_01845ca432a7ac989d601d86.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_01a5df31ffeff86af02cef91.png", "id": "gf_01a5df31ffeff86af02cef91", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4675c85b3c7be8318beef7ab", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_01a5df31ffeff86af02cef91.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_01aad9070a099c9686b1a8d8.png", "id": "gf_01aad9070a099c9686b1a8d8", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_753e955a881e91cb6f5fc98d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_01aad9070a099c9686b1a8d8.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_01ed85c0fc61fa97104090ab.png", "id": "gf_01ed85c0fc61fa97104090ab", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_3f560c69f89193ef2a18dd0b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_01ed85c0fc61fa97104090ab.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_025e7c0a31582e312ead6e04.png", "id": "gf_025e7c0a31582e312ead6e04", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_3e82648710a31037aa2c270a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_025e7c0a31582e312ead6e04.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_034761d10ab245e394f2c4c2.png", "id": "gf_034761d10ab245e394f2c4c2", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_90b84c9234cc396fad52bd2c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_034761d10ab245e394f2c4c2.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_0390ab4fc5bf8d1e545559b2.png", "id": "gf_0390ab4fc5bf8d1e545559b2", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f78a6b48e75c47cdca793a5d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_0390ab4fc5bf8d1e545559b2.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_04395a13d77e201343cadf55.png", "id": "gf_04395a13d77e201343cadf55", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_34241a346e3e87b3cfd53b73", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_04395a13d77e201343cadf55.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_04598a2d629b3799cc782225.png", "id": "gf_04598a2d629b3799cc782225", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3e1c91fc548605ba36391c9d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_04598a2d629b3799cc782225.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_0460bac19cd7b6bb32698de0.png", "id": "gf_0460bac19cd7b6bb32698de0", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_94cbd4eca636e763d6177ef3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_0460bac19cd7b6bb32698de0.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_04c7b7efa3f4b9ae49f17ea8.png", "id": "gf_04c7b7efa3f4b9ae49f17ea8", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_0bbf32b0263590e39e2202fd", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_04c7b7efa3f4b9ae49f17ea8.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_04e466535a9f9ec2e84028e6.png", "id": "gf_04e466535a9f9ec2e84028e6", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9aa2602fa29b85cf2169f8ed", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_04e466535a9f9ec2e84028e6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_0567a020c4c12b8516340234.png", "id": "gf_0567a020c4c12b8516340234", "observation_time_s": 2.166666666666667, "original_partition": "development", "pair_id": "pair_941eb3c7643622e2b6b2617a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_0567a020c4c12b8516340234.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.2 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_05a18497a2a1b889cce38a8e.png", "id": "gf_05a18497a2a1b889cce38a8e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e2eb8ac858f9476dad7f39a9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_05a18497a2a1b889cce38a8e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_0646ea3f5527b9795658db32.png", "id": "gf_0646ea3f5527b9795658db32", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_e8938ffef5a1200bbd38d9d1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_right", "reference_video": "references/gf_0646ea3f5527b9795658db32.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_073461edea2147f92901b4b8.png", "id": "gf_073461edea2147f92901b4b8", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_0377ebc858c5a4ba1b0c6423", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_073461edea2147f92901b4b8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_075f6dd96a5dd1b95c3e6231.png", "id": "gf_075f6dd96a5dd1b95c3e6231", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_86006860bdfb56c78a25de48", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_075f6dd96a5dd1b95c3e6231.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_07958022cf79c8cad8021b2b.png", "id": "gf_07958022cf79c8cad8021b2b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_154c8425f0764e9d9b0bc78f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_07958022cf79c8cad8021b2b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_07abf23592f9d600e5b06ad1.png", "id": "gf_07abf23592f9d600e5b06ad1", "observation_time_s": 0.3, "original_partition": "development", "pair_id": "pair_f69ab1560c95f0fe6ea311ac", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_07abf23592f9d600e5b06ad1.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The two connected rigid rods are released from rest under gravity. Passive hinge friction is present; there is no active drive or external push. Predict the upper rod initial motion. Keep the camera and scene unchanged and use real-time speed.", "task": "upper_rod_direction_at_0_3_s"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_07e7692737c951ecc814f2ab.png", "id": "gf_07e7692737c951ecc814f2ab", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_92a406788e99d66e65c0fc31", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_07e7692737c951ecc814f2ab.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_0826b2542ad9a5638e4b6e32.png", "id": "gf_0826b2542ad9a5638e4b6e32", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1544c70dfb44efd16272f359", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_0826b2542ad9a5638e4b6e32.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_083a8f11f8d7ec7c9f241e03.png", "id": "gf_083a8f11f8d7ec7c9f241e03", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_ea3d3a11cccec7870a368a7b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "separated", "reference_video": "references/gf_083a8f11f8d7ec7c9f241e03.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the block on the inclined surface under gravity. It can contact and compress the finite passive spring piston, then may separate; it is not attached to the spring. Continue6seconds under the stated native contact friction and ideal spring/guide conditions. Determine whether block and piston separate after their first contact within the video window, not merely whether the initial frame has a gap. No terminal-rest requirement.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_086664b98d14ebe687d78452.png", "id": "gf_086664b98d14ebe687d78452", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_c4ca0781be40c0002f23c79e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_086664b98d14ebe687d78452.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_088630f50fc0fb719c0a13c0.png", "id": "gf_088630f50fc0fb719c0a13c0", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9cb29eb0bee85b9b064e0053", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_088630f50fc0fb719c0a13c0.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_08d1d5efbb56c3197052e61c.png", "id": "gf_08d1d5efbb56c3197052e61c", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_3f40ffb64221449899376201", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_08d1d5efbb56c3197052e61c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_09184dd49dd148aa8999eea0.png", "id": "gf_09184dd49dd148aa8999eea0", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e9f299bf36881ddf1e9d23da", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_09184dd49dd148aa8999eea0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_097afee6f772db6758f4f720.png", "id": "gf_097afee6f772db6758f4f720", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3aafab7e7e874212608d8c55", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_097afee6f772db6758f4f720.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_0991ad845ae3bc85798d12b9.png", "id": "gf_0991ad845ae3bc85798d12b9", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_d0423f0765da858fa4670ecf", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_0991ad845ae3bc85798d12b9.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "time_countercontrol", "first_frame": "first_frames/gf_09a992734fb1da0d22e0dd7d.png", "id": "gf_09a992734fb1da0d22e0dd7d", "observation_time_s": 0.6666666666666666, "original_partition": "development", "pair_id": "pair_82cf76b398e9af86fe40df71", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.7, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_09a992734fb1da0d22e0dd7d.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.6 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.66666667 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_09abc2b849044f7b61a93614.png", "id": "gf_09abc2b849044f7b61a93614", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_b9254f3a1d0898cb0ac89aaa", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_09abc2b849044f7b61a93614.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_09da93cf3384df3cdcc851f5.png", "id": "gf_09da93cf3384df3cdcc851f5", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_181d32a63d476e76f271d414", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_09da93cf3384df3cdcc851f5.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_09e3bafb303a1ffa9d1e0b40.png", "id": "gf_09e3bafb303a1ffa9d1e0b40", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_e7332decfd90021c9a30a95a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_09e3bafb303a1ffa9d1e0b40.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_09e9154776e3274cb8030747.png", "id": "gf_09e9154776e3274cb8030747", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_fa2155b2250db5f1bda19463", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_09e9154776e3274cb8030747.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_0a51c272420100b5cf45e3cb.png", "id": "gf_0a51c272420100b5cf45e3cb", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_d693b37ef6ac38eea96eec73", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_0a51c272420100b5cf45e3cb.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. Two uniform solid rods form a double pendulum with ideal frictionless planar hinges. Upper/lower rod lengths are [0.62, 0.72] m, masses [1.27875, 1.485] kg, rectangular cross-section 0.055 by 0.075 m. Adjacent rods do not collide at their ideal joint.", "task": "upper_rod_horizontal_direction_at_0_2_s"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_0a82e1c7d95d642f68e6455d.png", "id": "gf_0a82e1c7d95d642f68e6455d", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_9ec9b68aabe1400149be289a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_right", "reference_video": "references/gf_0a82e1c7d95d642f68e6455d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_0a9a381df56c870a5a488426.png", "id": "gf_0a9a381df56c870a5a488426", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f21d2d4b46f573f075342b92", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_0a9a381df56c870a5a488426.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_0ac89b35be4d8100dd0e7b45.png", "id": "gf_0ac89b35be4d8100dd0e7b45", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d12af7ffb241d351d936dcbe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_0ac89b35be4d8100dd0e7b45.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_0aec58ce4c44f3657c73afef.png", "id": "gf_0aec58ce4c44f3657c73afef", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_e31bcbf9ffc430545418fe50", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_0aec58ce4c44f3657c73afef.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_0b001a650c2d46f57449bcdf.png", "id": "gf_0b001a650c2d46f57449bcdf", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_6b79fe5c008ce46be0b6c958", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_0b001a650c2d46f57449bcdf.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_0b1e9e00c4e54826f533b8be.png", "id": "gf_0b1e9e00c4e54826f533b8be", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_525c8519d0f53b60fa16ee54", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_0b1e9e00c4e54826f533b8be.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_0b4fa6f8bc5af2321fdd3116.png", "id": "gf_0b4fa6f8bc5af2321fdd3116", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_2e3d37404bb9392c2fddcb77", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_0b4fa6f8bc5af2321fdd3116.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_0b7df4ef90c79eb8bd443a8a.png", "id": "gf_0b7df4ef90c79eb8bd443a8a", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_76d83b0bbd9af0f1a7348a88", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_0b7df4ef90c79eb8bd443a8a.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_0c058de181f86bba13915f69.png", "id": "gf_0c058de181f86bba13915f69", "observation_time_s": 0.1, "original_partition": "test", "pair_id": "pair_e0c20cb811be1b26d23bb70d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_0c058de181f86bba13915f69.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_0c449e2fbeb1056c49734e5b.png", "id": "gf_0c449e2fbeb1056c49734e5b", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_ec2c39ae88c6d3c9e18e0420", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_0c449e2fbeb1056c49734e5b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_0c5db3ebb93e303f5bd38823.png", "id": "gf_0c5db3ebb93e303f5bd38823", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a7555afac0062ec0e41b9151", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_0c5db3ebb93e303f5bd38823.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["left", "right"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_0c63c6003343fdcfa3a530e7.png", "id": "gf_0c63c6003343fdcfa3a530e7", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_c5f9903fd336ff99ec7b6b87", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_0c63c6003343fdcfa3a530e7.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The blocks and moving base are released from rest. Predict the right block initial motion in world coordinates under passive connected springs and Coulomb friction. No active drive or external push. Keep the camera fixed and use real-time speed.", "task": "right_block_absolute_direction_at_0_2_s"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_0c8a57ceb056bf77cd2dd54c.png", "id": "gf_0c8a57ceb056bf77cd2dd54c", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_069c4144e2c591fd218dc4a3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_0c8a57ceb056bf77cd2dd54c.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_0cc7e80d1285477c5a4794bf.png", "id": "gf_0cc7e80d1285477c5a4794bf", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_4c5a6d356d9e870ee4402c7e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_0cc7e80d1285477c5a4794bf.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_0cfa4c06550fcb3905a006a8.png", "id": "gf_0cfa4c06550fcb3905a006a8", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_927537d9f354f8ff6968613d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_0cfa4c06550fcb3905a006a8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_0dcdd91ea71d8bb4fce0c048.png", "id": "gf_0dcdd91ea71d8bb4fce0c048", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_5a0214f49cc8cf2644af80ea", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_0dcdd91ea71d8bb4fce0c048.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_0dd2b24a36aabb7bc45664dc.png", "id": "gf_0dd2b24a36aabb7bc45664dc", "observation_time_s": 2.1666666666666665, "original_partition": "test", "pair_id": "pair_97c277a43ea95b444e496e85", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_0dd2b24a36aabb7bc45664dc.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_0f21b54c8aa559aca8f38081.png", "id": "gf_0f21b54c8aa559aca8f38081", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b8ba4708b81c1615839a7ec8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_0f21b54c8aa559aca8f38081.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the precompressed passive spring piston. The unbonded orange projectile with a spherical nose can leave the piston and strike the free uniform wooden bar off-centre on the frictional table. Use stored elastic energy, gravity and the stated contact laws. The bar is not pinned. Predict the full 6 seconds, including the first impact. Label the projectile horizontal direction immediately after its FIRST bar impact, not its final resting position. Bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_0f23fbaf6cbd2fa8bb1fe9f5.png", "id": "gf_0f23fbaf6cbd2fa8bb1fe9f5", "observation_time_s": 0.1, "original_partition": "train", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_0f23fbaf6cbd2fa8bb1fe9f5.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["downhill", "uphill"], "category": "contact", "condition": "A", "construction_subset": "parameter_conditioned_single_first_frame", "first_frame": "first_frames/gf_0f55cf6637c03eaefbc32851.png", "id": "gf_0f55cf6637c03eaefbc32851", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_32807487586499cc63f93fbf", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "uphill", "reference_video": "references/gf_0f55cf6637c03eaefbc32851.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the subsequent motion under gravity, the permanently attached preloaded ideal Hooke spring, passive friction, and the ideal massless inextensible rope. There are no hands, active motors or external pushes. Keep the scene and camera unchanged; use realistic physics and real-time speed. Use the shared physical conditions provided with this apparatus. Do not infer the spring rest length or hidden mass/inertia from color.", "task": "A_initial_slope_direction_at_0_2_s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_0f93206b030cf6a0cdffb1a0.png", "id": "gf_0f93206b030cf6a0cdffb1a0", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_8534010b577dcc3a437ba1c8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_0f93206b030cf6a0cdffb1a0.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_0ffc2182a821627752f1a988.png", "id": "gf_0ffc2182a821627752f1a988", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_8dd6275468423fdb14c956c8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_0ffc2182a821627752f1a988.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_101a9afd1bb82b6dec88511b.png", "id": "gf_101a9afd1bb82b6dec88511b", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_249420e3a77a9f422da43c15", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_101a9afd1bb82b6dec88511b.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_1034e2a72864b00edc70ea61.png", "id": "gf_1034e2a72864b00edc70ea61", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_46bf436f75e2e14a606f58ed", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_1034e2a72864b00edc70ea61.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_1067d84f47e8a2b19a69d90f.png", "id": "gf_1067d84f47e8a2b19a69d90f", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_2277b4e004089bd274d5e848", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_1067d84f47e8a2b19a69d90f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_10c66f0ee3ebc4e874f054c9.png", "id": "gf_10c66f0ee3ebc4e874f054c9", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_626c7229d1bc8db704dadae8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_right", "reference_video": "references/gf_10c66f0ee3ebc4e874f054c9.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_1120f677b690b7fc5579a1e8.png", "id": "gf_1120f677b690b7fc5579a1e8", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5290894a7ad6ee69ab224a5c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_1120f677b690b7fc5579a1e8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_117e0d16f66df4daa47c56b6.png", "id": "gf_117e0d16f66df4daa47c56b6", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_429ea9a82027b3192cbd197a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_117e0d16f66df4daa47c56b6.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_1197dd9945a0c1ca2b6a1eac.png", "id": "gf_1197dd9945a0c1ca2b6a1eac", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_0d9f8b99e44094a13479ec30", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1197dd9945a0c1ca2b6a1eac.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_11d3578d0744b54c990c64a8.png", "id": "gf_11d3578d0744b54c990c64a8", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4d7a88eeeb9c03aa9adb8243", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_11d3578d0744b54c990c64a8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_11d38e070fa2b8167744ba53.png", "id": "gf_11d38e070fa2b8167744ba53", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_dd3edc8e5f8c75e747ad5db4", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_11d38e070fa2b8167744ba53.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_124a3b7e19f3ab4f381528fe.png", "id": "gf_124a3b7e19f3ab4f381528fe", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0e1c6a0d7a8d3c7dd2004918", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_124a3b7e19f3ab4f381528fe.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_128aca3603c8908fa2620dcf.png", "id": "gf_128aca3603c8908fa2620dcf", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_6254f21154c75322590c2d4b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_128aca3603c8908fa2620dcf.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_128decdbd39d4750e45a0ece.png", "id": "gf_128decdbd39d4750e45a0ece", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_01e32009d891809e107b9fe2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_128decdbd39d4750e45a0ece.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_12a59a21742d50df6dc97eb6.png", "id": "gf_12a59a21742d50df6dc97eb6", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_a87cfe4ac041856e8a6a8f2e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_12a59a21742d50df6dc97eb6.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_1311536aac189320fa3721d2.png", "id": "gf_1311536aac189320fa3721d2", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_a92e078dfcf756b839384311", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "separated", "reference_video": "references/gf_1311536aac189320fa3721d2.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the block on the inclined surface under gravity. It can contact and compress the finite passive spring piston, then may separate; it is not attached to the spring. Continue6seconds under the stated native contact friction and ideal spring/guide conditions. Determine whether block and piston separate after their first contact within the video window, not merely whether the initial frame has a gap. No terminal-rest requirement.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_13434fe1e48de4ccc89f6005.png", "id": "gf_13434fe1e48de4ccc89f6005", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": "pair_5ad79da00afc39670f032341", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_13434fe1e48de4ccc89f6005.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_138b674161efdd26d3dc4235.png", "id": "gf_138b674161efdd26d3dc4235", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_551c756d538813d187b6dfe5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_138b674161efdd26d3dc4235.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_147ad71e55cadce8ff510484.png", "id": "gf_147ad71e55cadce8ff510484", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_837f7e7ca6532f9f735e9335", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_147ad71e55cadce8ff510484.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_14b15f7add87c4569db0554f.png", "id": "gf_14b15f7add87c4569db0554f", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_ab92a58e2ee1aa1df55040d9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_right", "reference_video": "references/gf_14b15f7add87c4569db0554f.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_14b8639128eebc8a40d1250a.png", "id": "gf_14b8639128eebc8a40d1250a", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_be1ef6bbebe70c7cda8e08bc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_14b8639128eebc8a40d1250a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the finite spherical pendulum under gravity with its massless rigid link and ideal hinge. The blue target is a free uniform box on a frictionless horizontal floor. Continue4seconds. Determine whether the pendulum sphere contacts the target within that observation window. Visible target height determines both target mass and inertia at the common density. No terminal-rest requirement.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_14dc5caee4c3e32e6cf161c1.png", "id": "gf_14dc5caee4c3e32e6cf161c1", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a1d3c396ea5524b80e161572", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_14dc5caee4c3e32e6cf161c1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_14fe045f8884b4003e8e3c78.png", "id": "gf_14fe045f8884b4003e8e3c78", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_28ed454fff18ee3a5fc18154", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_14fe045f8884b4003e8e3c78.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_151ee6b0691b93e8cb9546fe.png", "id": "gf_151ee6b0691b93e8cb9546fe", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_524c1ed5c603ec899175433d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_151ee6b0691b93e8cb9546fe.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_15385afa158805c76ab80560.png", "id": "gf_15385afa158805c76ab80560", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_105953276bb094df0ee6826b", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_15385afa158805c76ab80560.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_153beb566f986f364d75be04.png", "id": "gf_153beb566f986f364d75be04", "observation_time_s": 0.5, "original_partition": "development", "pair_id": "pair_290fe23c5c71d2c2ee6a44cc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5333333333333333, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_153beb566f986f364d75be04.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.8 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.50000000 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_1557cea9068c25ce7b0538fb.png", "id": "gf_1557cea9068c25ce7b0538fb", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_eadd652feb173cfa1481d5ac", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1557cea9068c25ce7b0538fb.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_15795bb28910fe8342f7e8da.png", "id": "gf_15795bb28910fe8342f7e8da", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_5396b8cc4cf330ebc6fc9a87", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_15795bb28910fe8342f7e8da.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_15962a5cbca7f5e0dee87aff.png", "id": "gf_15962a5cbca7f5e0dee87aff", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_8ff4443e170ae89c2e860bbe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_15962a5cbca7f5e0dee87aff.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_15c631ad20133edb7ec3c008.png", "id": "gf_15c631ad20133edb7ec3c008", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_77a42f8536ddf2dd4a7967db", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_15c631ad20133edb7ec3c008.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_163240dc4e746546568a228a.png", "id": "gf_163240dc4e746546568a228a", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_e0cc0dddf69d923e8e645ec8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_163240dc4e746546568a228a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_1676ef0e38c9e7518bf7efac.png", "id": "gf_1676ef0e38c9e7518bf7efac", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": "pair_f95d0cfd7b9a779648197c03", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_1676ef0e38c9e7518bf7efac.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_1684d1b7a8301bfbd2f6609a.png", "id": "gf_1684d1b7a8301bfbd2f6609a", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": "pair_f95d0cfd7b9a779648197c03", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_1684d1b7a8301bfbd2f6609a.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_16ee3c13bfe87eb4b0868ebb.png", "id": "gf_16ee3c13bfe87eb4b0868ebb", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f7eed6947b6e0141b9b200b5", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_16ee3c13bfe87eb4b0868ebb.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_17248947384795d3b95013ab.png", "id": "gf_17248947384795d3b95013ab", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_71269fae753cffeab2a77467", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_17248947384795d3b95013ab.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_1786006e931cec6a345aec40.png", "id": "gf_1786006e931cec6a345aec40", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_ff3b8dce9c568102d98b98e5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1786006e931cec6a345aec40.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_1792ee3be6d1011105054226.png", "id": "gf_1792ee3be6d1011105054226", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_96fbc536fa002a6037c29c11", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1792ee3be6d1011105054226.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_17a1379d23db37bc67a67472.png", "id": "gf_17a1379d23db37bc67a67472", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_d9c516642df96ce45fa2ee57", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_17a1379d23db37bc67a67472.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_17f3065c02bb2857147c772c.png", "id": "gf_17f3065c02bb2857147c772c", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_ab92a58e2ee1aa1df55040d9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_left", "reference_video": "references/gf_17f3065c02bb2857147c772c.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_17fb5dec1b6d7b0146d4cc6b.png", "id": "gf_17fb5dec1b6d7b0146d4cc6b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_2cae1c6cd0096f7746e7ca6f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_17fb5dec1b6d7b0146d4cc6b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_182351d58fe84d668f23c7b1.png", "id": "gf_182351d58fe84d668f23c7b1", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b5105275abd88b0d37ec062d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "retained", "reference_video": "references/gf_182351d58fe84d668f23c7b1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the block on the inclined surface under gravity. It can contact and compress the finite passive spring piston, then may separate; it is not attached to the spring. Continue6seconds under the stated native contact friction and ideal spring/guide conditions. Determine whether block and piston separate after their first contact within the video window, not merely whether the initial frame has a gap. No terminal-rest requirement.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_189f8f931be1bd2aa061b454.png", "id": "gf_189f8f931be1bd2aa061b454", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_0977658b9cfaaa7e311d9d15", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_189f8f931be1bd2aa061b454.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_18e2e64581e10329d2160505.png", "id": "gf_18e2e64581e10329d2160505", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f133e136daaab2732f3da76a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_18e2e64581e10329d2160505.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_18eb6df0b78cf17a555c35e4.png", "id": "gf_18eb6df0b78cf17a555c35e4", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3a340e7f772f932e7c4fcb27", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_18eb6df0b78cf17a555c35e4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_1a0a68ff9a6440852f26550e.png", "id": "gf_1a0a68ff9a6440852f26550e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_885c7e15c1be499ec362c10c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_1a0a68ff9a6440852f26550e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_1a1e5e39845fa746f38f328b.png", "id": "gf_1a1e5e39845fa746f38f328b", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_d308e46e84a6efe6a1da3a8c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_1a1e5e39845fa746f38f328b.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_1a48b782494ef86f73759b4d.png", "id": "gf_1a48b782494ef86f73759b4d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a8abac8ce4430d1c817a7cb6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1a48b782494ef86f73759b4d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_1b54ba31d3754989e65472db.png", "id": "gf_1b54ba31d3754989e65472db", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_a09fcdb1c0be5eaa379c5370", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1b54ba31d3754989e65472db.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_1b7408b09a078e30b658cb1d.png", "id": "gf_1b7408b09a078e30b658cb1d", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_8234cfd56843e83671540d5b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_1b7408b09a078e30b658cb1d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the precompressed passive spring piston. The unbonded orange projectile can separate and strike the free wooden bar off-centre. The bar is not pinned. Continue6seconds, including impact and subsequent motion. Judge the projectile X direction immediately after its FIRST bar impact, not its final position. Visible bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_1b79294170895dea232a527c.png", "id": "gf_1b79294170895dea232a527c", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f1732893c538ceb68e04a06c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_1b79294170895dea232a527c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_1b969c174af8aa9f21532b3b.png", "id": "gf_1b969c174af8aa9f21532b3b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_d9c8a098e490a47366fac6ad", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1b969c174af8aa9f21532b3b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_1ba6fa8207bce6808582a782.png", "id": "gf_1ba6fa8207bce6808582a782", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_c66fc2404f9536232995dae4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_1ba6fa8207bce6808582a782.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_1bac536444719c6048b74c73.png", "id": "gf_1bac536444719c6048b74c73", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": "pair_3231079df4c761465d873336", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_1bac536444719c6048b74c73.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_1c4cf916cb92900517f06993.png", "id": "gf_1c4cf916cb92900517f06993", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3e1c91fc548605ba36391c9d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1c4cf916cb92900517f06993.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_1cb38b84a6204d206ec748b2.png", "id": "gf_1cb38b84a6204d206ec748b2", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_aef98eab2b9240ccc92a7c7e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_1cb38b84a6204d206ec748b2.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_1cdc3e02a8152a885817ff5d.png", "id": "gf_1cdc3e02a8152a885817ff5d", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_aef98eab2b9240ccc92a7c7e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1cdc3e02a8152a885817ff5d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_1d489bce5bad5dba42facffb.png", "id": "gf_1d489bce5bad5dba42facffb", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_49bc863a57cf94d49682548f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_1d489bce5bad5dba42facffb.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_1d8163864ece67739dbdb7f1.png", "id": "gf_1d8163864ece67739dbdb7f1", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_a96bdecb69800f44b576606c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_1d8163864ece67739dbdb7f1.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. Two uniform solid rods form a double pendulum with ideal frictionless planar hinges. Upper/lower rod lengths are [0.6, 0.7] m, masses [0.8775000000000001, 1.02375] kg, rectangular cross-section 0.045 by 0.065 m. Adjacent rods do not collide at their ideal joint.", "task": "upper_rod_horizontal_direction_at_0_2_s"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_1dad5a87efb45e059d3b1d8a.png", "id": "gf_1dad5a87efb45e059d3b1d8a", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_f8ca2837381292a2f1e98869", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_1dad5a87efb45e059d3b1d8a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_1db88b95b1262b3af3b2e08e.png", "id": "gf_1db88b95b1262b3af3b2e08e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d73aa557a11aae81c27245d3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_1db88b95b1262b3af3b2e08e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_1e34aa6b3e96ba58cd3bf3df.png", "id": "gf_1e34aa6b3e96ba58cd3bf3df", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_559e39334951a3db5a6e4696", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_1e34aa6b3e96ba58cd3bf3df.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_1e853157dd836c1ae5ea54dd.png", "id": "gf_1e853157dd836c1ae5ea54dd", "observation_time_s": 2.466666666666667, "original_partition": "validation", "pair_id": "pair_6267132bf9067015e6e8dbb1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_1e853157dd836c1ae5ea54dd.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_1e860bd140397bcbb210c03d.png", "id": "gf_1e860bd140397bcbb210c03d", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_605cbe012f750298a82a3a56", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_1e860bd140397bcbb210c03d.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_1ec3dc9d68e50b8678ce6b8c.png", "id": "gf_1ec3dc9d68e50b8678ce6b8c", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_9a4553aa5e36d83fb4ab2901", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1ec3dc9d68e50b8678ce6b8c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_1ee3e06d40d050cf260ef893.png", "id": "gf_1ee3e06d40d050cf260ef893", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_00114f15de1f30ae4e381233", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_1ee3e06d40d050cf260ef893.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_1f33326449ebf7c01b66a243.png", "id": "gf_1f33326449ebf7c01b66a243", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_cd830f0de37de5ffc93a1d8f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_1f33326449ebf7c01b66a243.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The loaded lever is released under gravity about its fixed hinge, with a passive stop on the left. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "lever_release_under_gravity"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_1f623d29233f36616a2ffa6f.png", "id": "gf_1f623d29233f36616a2ffa6f", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f96120bb4f163f9753167420", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_1f623d29233f36616a2ffa6f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_1f72806c5246cf3e59777cf5.png", "id": "gf_1f72806c5246cf3e59777cf5", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_2308a2e12efa5def4478f667", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_1f72806c5246cf3e59777cf5.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_1fad14f857016df818c2258d.png", "id": "gf_1fad14f857016df818c2258d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5290894a7ad6ee69ab224a5c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_1fad14f857016df818c2258d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_20443853b2afd54741423dc8.png", "id": "gf_20443853b2afd54741423dc8", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_9c96d935d032c83fb983c82f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_20443853b2afd54741423dc8.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_2089fb214f057b1f9dabd9d9.png", "id": "gf_2089fb214f057b1f9dabd9d9", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_e96f8646362804c6205cde0b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_left", "reference_video": "references/gf_2089fb214f057b1f9dabd9d9.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_20b4230fb72ec8ad1fa7bfad.png", "id": "gf_20b4230fb72ec8ad1fa7bfad", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_08e25f8ba69942a155f5724e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_20b4230fb72ec8ad1fa7bfad.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_20b4dc538372e7fe1dc6183b.png", "id": "gf_20b4dc538372e7fe1dc6183b", "observation_time_s": 0.5333333333333333, "original_partition": "development", "pair_id": "pair_cbbe41be32871d1dcec20f63", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5666666666666667, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_20b4dc538372e7fe1dc6183b.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.2 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.53333333 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2103aa89cbe5cd23e18f1296.png", "id": "gf_2103aa89cbe5cd23e18f1296", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_6d9ed82040adcd0ef8bb303d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_2103aa89cbe5cd23e18f1296.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_21a19c36dbaf42e1e43201f4.png", "id": "gf_21a19c36dbaf42e1e43201f4", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e9d34621eb6008c557396aa7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_21a19c36dbaf42e1e43201f4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_221b83abafa654025ea7f9f0.png", "id": "gf_221b83abafa654025ea7f9f0", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_9be8ed642170c7b57091f28d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_221b83abafa654025ea7f9f0.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_229d259cbb0700839fea7657.png", "id": "gf_229d259cbb0700839fea7657", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_48f05aac891a45781cd3fc66", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_229d259cbb0700839fea7657.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_22fb794da0de1a6f998de85a.png", "id": "gf_22fb794da0de1a6f998de85a", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_8bdc2f0f5449caccb4f27d50", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_22fb794da0de1a6f998de85a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2356495d0b73ed4bac117a1a.png", "id": "gf_2356495d0b73ed4bac117a1a", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_89dd93d125122df95f22fe49", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_2356495d0b73ed4bac117a1a.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_2364e4d9a732ffd3dec7dd51.png", "id": "gf_2364e4d9a732ffd3dec7dd51", "observation_time_s": 2.1666666666666665, "original_partition": "test", "pair_id": "pair_61327905423f1788335fa1bd", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_2364e4d9a732ffd3dec7dd51.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_23af1e7e5df1cda26d7a23fe.png", "id": "gf_23af1e7e5df1cda26d7a23fe", "observation_time_s": 2.466666666666667, "original_partition": "validation", "pair_id": "pair_6d37c4dc2c3c2cadebd265ed", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_23af1e7e5df1cda26d7a23fe.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_2426c385f7cdf42c61ffd569.png", "id": "gf_2426c385f7cdf42c61ffd569", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a43ad78d43fd9bf7989d7e15", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_2426c385f7cdf42c61ffd569.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_244cf1d5ef74c6c7b37847e7.png", "id": "gf_244cf1d5ef74c6c7b37847e7", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_575f128bbc8e245cb9b1c65a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_244cf1d5ef74c6c7b37847e7.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2468fdf2e1a2be967df376dc.png", "id": "gf_2468fdf2e1a2be967df376dc", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_e4a37846a4c40a3f474432cc", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_2468fdf2e1a2be967df376dc.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_24a5b1952e95317636f283b4.png", "id": "gf_24a5b1952e95317636f283b4", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_4655da2d00143dc5dc20779d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_24a5b1952e95317636f283b4.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_24b7aeae1e2fce35b4cbed75.png", "id": "gf_24b7aeae1e2fce35b4cbed75", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_146a9e71312298814aaee02b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_24b7aeae1e2fce35b4cbed75.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_24e403970d092feb05f4b455.png", "id": "gf_24e403970d092feb05f4b455", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a43ad78d43fd9bf7989d7e15", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_24e403970d092feb05f4b455.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_25951d1b9af2f790f2393735.png", "id": "gf_25951d1b9af2f790f2393735", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_3bf1c15f79d423517f82fb04", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_25951d1b9af2f790f2393735.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_25ab324aa68ddbcc99261bb4.png", "id": "gf_25ab324aa68ddbcc99261bb4", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_f10d103fff83f03f2bafd2a2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_25ab324aa68ddbcc99261bb4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_25ef27e9fd0b377d948d562e.png", "id": "gf_25ef27e9fd0b377d948d562e", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_beae2c8c72706f28a089e831", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_25ef27e9fd0b377d948d562e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_2633f15c7d51db206659cd0d.png", "id": "gf_2633f15c7d51db206659cd0d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_7b843775e47c1b5ba2155879", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_2633f15c7d51db206659cd0d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_267b3e35e3b31889e27f83bf.png", "id": "gf_267b3e35e3b31889e27f83bf", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_f8ca2837381292a2f1e98869", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_267b3e35e3b31889e27f83bf.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_26c4859bf7bf31831dcb822e.png", "id": "gf_26c4859bf7bf31831dcb822e", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_e2cf37c2661a8a996942c7a2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_26c4859bf7bf31831dcb822e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_26eb78890e839c494406d2e2.png", "id": "gf_26eb78890e839c494406d2e2", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_e96f8646362804c6205cde0b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_right", "reference_video": "references/gf_26eb78890e839c494406d2e2.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_272d81a57db083d62a81969e.png", "id": "gf_272d81a57db083d62a81969e", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_52e9eacebebf578dc73722d0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_272d81a57db083d62a81969e.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_27308ab205d1d887dfa0d8fc.png", "id": "gf_27308ab205d1d887dfa0d8fc", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_181d8184409f8b972dfc5ee3", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_27308ab205d1d887dfa0d8fc.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_273dd8d4fc1a7ddd22aa2ed7.png", "id": "gf_273dd8d4fc1a7ddd22aa2ed7", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b9160a8b256ba7572b08d5cd", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_273dd8d4fc1a7ddd22aa2ed7.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_27b535a42d0f152fff25aa5c.png", "id": "gf_27b535a42d0f152fff25aa5c", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_749a742068d0e66cfb449a46", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_27b535a42d0f152fff25aa5c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_27e9ad0bcc6bb1c59cee938c.png", "id": "gf_27e9ad0bcc6bb1c59cee938c", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_e2cf37c2661a8a996942c7a2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_27e9ad0bcc6bb1c59cee938c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_281fa21773f66e8969f77a8f.png", "id": "gf_281fa21773f66e8969f77a8f", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_677e9bbc9f22878afff07363", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_281fa21773f66e8969f77a8f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_284468601023c53d683b23ac.png", "id": "gf_284468601023c53d683b23ac", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_22cfecae620017a9895f7297", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_284468601023c53d683b23ac.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_2848e467ff894719b27eca2e.png", "id": "gf_2848e467ff894719b27eca2e", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_3dd5ebc9e9e5bdffebd598db", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_2848e467ff894719b27eca2e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_2849f456ae22d405d31e3508.png", "id": "gf_2849f456ae22d405d31e3508", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_b0d76dc51713f2ffc095c29c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_2849f456ae22d405d31e3508.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_2871caf20d31875cf0c3a237.png", "id": "gf_2871caf20d31875cf0c3a237", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_0977658b9cfaaa7e311d9d15", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_2871caf20d31875cf0c3a237.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_28d864a43b8b43188e8922d7.png", "id": "gf_28d864a43b8b43188e8922d7", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_288660fa0d78baa187c7cbba", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_28d864a43b8b43188e8922d7.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_28f574af368db4e829d5df78.png", "id": "gf_28f574af368db4e829d5df78", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_da9de80d6b3f52632afe59ab", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_28f574af368db4e829d5df78.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_29aac306d9919cc15d4e3740.png", "id": "gf_29aac306d9919cc15d4e3740", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_6a53603101a316c28906aa15", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_29aac306d9919cc15d4e3740.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_2a4b024575fd86b1f9e1ada6.png", "id": "gf_2a4b024575fd86b1f9e1ada6", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_4315ec0be870b481e8d447d6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_2a4b024575fd86b1f9e1ada6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_2a5739e6aa3da941537847ef.png", "id": "gf_2a5739e6aa3da941537847ef", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_23ac285542c1d5fe1d7c34c1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_2a5739e6aa3da941537847ef.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_2a654dc6abb041e5212154f6.png", "id": "gf_2a654dc6abb041e5212154f6", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_94b9225c7ae2f36faae84cfc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_2a654dc6abb041e5212154f6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_2a7ee04a2683c31f804a57bf.png", "id": "gf_2a7ee04a2683c31f804a57bf", "observation_time_s": 2.466666666666667, "original_partition": "validation", "pair_id": "pair_6267132bf9067015e6e8dbb1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_2a7ee04a2683c31f804a57bf.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2a95b30ea22a06d28ab692d2.png", "id": "gf_2a95b30ea22a06d28ab692d2", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_7c3b2f0cb57aef2958559447", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_2a95b30ea22a06d28ab692d2.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_2aae16782a3298f15bdf350b.png", "id": "gf_2aae16782a3298f15bdf350b", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_94cbd4eca636e763d6177ef3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_2aae16782a3298f15bdf350b.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2ab5f7acd92db086f675c1ac.png", "id": "gf_2ab5f7acd92db086f675c1ac", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_bb2abfa5bd53ef98013a091c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_2ab5f7acd92db086f675c1ac.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_2abe4e149b87c9fc1589aa28.png", "id": "gf_2abe4e149b87c9fc1589aa28", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4f01c501e1bb7997109a301e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_2abe4e149b87c9fc1589aa28.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_2b14199175813c472c9d57d3.png", "id": "gf_2b14199175813c472c9d57d3", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_89a01ad5c7dea43d4aa9b61c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_2b14199175813c472c9d57d3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The loaded lever is released under gravity about its fixed hinge, with a passive stop on the left. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "lever_release_under_gravity"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_2b82ca55077e10df993fecc4.png", "id": "gf_2b82ca55077e10df993fecc4", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_22cfecae620017a9895f7297", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_2b82ca55077e10df993fecc4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_2be7891f9ef7372bcf628901.png", "id": "gf_2be7891f9ef7372bcf628901", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_ecb8a15663420e1cbafbbc17", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_2be7891f9ef7372bcf628901.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the precompressed passive spring piston. The unbonded orange projectile can separate and strike the free wooden bar off-centre. The bar is not pinned. Continue6seconds, including impact and subsequent motion. Judge the projectile X direction immediately after its FIRST bar impact, not its final position. Visible bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_2c009487d3c9d7fed62dbe4f.png", "id": "gf_2c009487d3c9d7fed62dbe4f", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_194bfa1109ead10398626c21", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_2c009487d3c9d7fed62dbe4f.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2c3a2e91c244e356ca48dbf9.png", "id": "gf_2c3a2e91c244e356ca48dbf9", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_a3dae4dd869dcc49e5d03ae5", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_2c3a2e91c244e356ca48dbf9.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_2c6d0b0984bbb55f3aae5e2d.png", "id": "gf_2c6d0b0984bbb55f3aae5e2d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9cb29eb0bee85b9b064e0053", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_2c6d0b0984bbb55f3aae5e2d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_2c789647c5d5c68c4938a2c7.png", "id": "gf_2c789647c5d5c68c4938a2c7", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_ba4c109f06987f17d1a7ce17", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_2c789647c5d5c68c4938a2c7.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2cb4cd0c21b7876c75771744.png", "id": "gf_2cb4cd0c21b7876c75771744", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_280eb30f53b1d542f268f4b1", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_2cb4cd0c21b7876c75771744.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_2d4a59060f9d70da316eed80.png", "id": "gf_2d4a59060f9d70da316eed80", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_cf1359079b9d0fbabb67b45f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_2d4a59060f9d70da316eed80.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_2d67625122cd80dfa87d81d1.png", "id": "gf_2d67625122cd80dfa87d81d1", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_d39fd0a15e6ec64102e99ac7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_2d67625122cd80dfa87d81d1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_2d67ab50f249f6b96dc5285c.png", "id": "gf_2d67ab50f249f6b96dc5285c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_8d7ec94c00faf0b7365e8a5b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_2d67ab50f249f6b96dc5285c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the finite spherical pendulum under gravity with its massless rigid link and ideal hinge. The blue target is a free uniform box on a frictionless horizontal floor. Continue4seconds. Determine whether the pendulum sphere contacts the target within that observation window. Visible target height determines both target mass and inertia at the common density. No terminal-rest requirement.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2d8d2e9acc1bee68707d4a95.png", "id": "gf_2d8d2e9acc1bee68707d4a95", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_b2446d50af7776beb01b98de", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_2d8d2e9acc1bee68707d4a95.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_2dd5c16e46e4f0f32a720ec2.png", "id": "gf_2dd5c16e46e4f0f32a720ec2", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_ee9d3d54130bb4ea854789a4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_2dd5c16e46e4f0f32a720ec2.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_2e869e6b0cbdfe4fe8f0e400.png", "id": "gf_2e869e6b0cbdfe4fe8f0e400", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_4fe184b20b35777f6c686179", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_2e869e6b0cbdfe4fe8f0e400.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_2eca2efdd4e929036351cd5f.png", "id": "gf_2eca2efdd4e929036351cd5f", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_868eaa20ff30d7bc4a1e8186", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_2eca2efdd4e929036351cd5f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_2efad5b2f0861fc82aac4d1e.png", "id": "gf_2efad5b2f0861fc82aac4d1e", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f7ae3f60b55da039db4675d1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_2efad5b2f0861fc82aac4d1e.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_2f1aa040304a9a938e17d126.png", "id": "gf_2f1aa040304a9a938e17d126", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d17d9a2cc2f5e2c69ca8a48e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_2f1aa040304a9a938e17d126.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_2f3011d9987a39369da17cf6.png", "id": "gf_2f3011d9987a39369da17cf6", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1ac14d31f7355746b854776f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_2f3011d9987a39369da17cf6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2f357ccd682380815ae50976.png", "id": "gf_2f357ccd682380815ae50976", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_3054e25229266ba918bbb5d0", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_2f357ccd682380815ae50976.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_2f6f3c6797bf9e1bd6fcc749.png", "id": "gf_2f6f3c6797bf9e1bd6fcc749", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5b9c41caac554522857feadd", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_2f6f3c6797bf9e1bd6fcc749.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_2fb8384df24a9e2a3aa25087.png", "id": "gf_2fb8384df24a9e2a3aa25087", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4015e9ffd976cb35914a9594", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_2fb8384df24a9e2a3aa25087.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_2fdcacd44c30d3c1fce75dc7.png", "id": "gf_2fdcacd44c30d3c1fce75dc7", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_13160f0014eebafb677683b9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_2fdcacd44c30d3c1fce75dc7.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_2ff2db59d08993442afb19e4.png", "id": "gf_2ff2db59d08993442afb19e4", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_bdca6ed68d6c1903e4f71e5d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_2ff2db59d08993442afb19e4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_307328741b40663e9bbe4727.png", "id": "gf_307328741b40663e9bbe4727", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_abddc8930b767a789cb34a5a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_307328741b40663e9bbe4727.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_312b09acb189ecb5bacb8c88.png", "id": "gf_312b09acb189ecb5bacb8c88", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_afbf471ba117e0130d8ad317", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_312b09acb189ecb5bacb8c88.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_31464968928604db7fac5e4b.png", "id": "gf_31464968928604db7fac5e4b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_6c9646171054fe22d3d2cce8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_31464968928604db7fac5e4b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_31672b403ca3333ab45ae5f1.png", "id": "gf_31672b403ca3333ab45ae5f1", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_8bdc2f0f5449caccb4f27d50", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_31672b403ca3333ab45ae5f1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3216a70513c97d0d75a9291e.png", "id": "gf_3216a70513c97d0d75a9291e", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_89aa8a000f2237cbe27aea02", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_3216a70513c97d0d75a9291e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_3217e5df9e34eb574f9ac8cb.png", "id": "gf_3217e5df9e34eb574f9ac8cb", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_cf53a5aba8718d4d55c283c5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_3217e5df9e34eb574f9ac8cb.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The loaded lever is released under gravity about its fixed hinge, with a passive stop on the left. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "lever_release_under_gravity"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_323cc81fbc472977fa802bd1.png", "id": "gf_323cc81fbc472977fa802bd1", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_01c9aa5522aab1a17351d4b4", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_323cc81fbc472977fa802bd1.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_32ab5a2fe856ccdefec8b67f.png", "id": "gf_32ab5a2fe856ccdefec8b67f", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4fe830e2eb4da86386747d56", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_32ab5a2fe856ccdefec8b67f.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_32cb96a24b7922ac85e5efe1.png", "id": "gf_32cb96a24b7922ac85e5efe1", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_65b369ba4016d45b0763c9ed", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_32cb96a24b7922ac85e5efe1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3306189be9d68f9ed6f97279.png", "id": "gf_3306189be9d68f9ed6f97279", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f98824418929e22cc01bab96", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_3306189be9d68f9ed6f97279.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_33687a811aa8bd0357bd03eb.png", "id": "gf_33687a811aa8bd0357bd03eb", "observation_time_s": 2.1666666666666665, "original_partition": "test", "pair_id": "pair_61327905423f1788335fa1bd", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_33687a811aa8bd0357bd03eb.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_3393fbec60d49f32e3edab89.png", "id": "gf_3393fbec60d49f32e3edab89", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5b4ddcfc0d6bbd658ad0fff8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_3393fbec60d49f32e3edab89.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_33ca27296fb1c497ca263a21.png", "id": "gf_33ca27296fb1c497ca263a21", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_a361803d2b924a10d60a2ffe", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_33ca27296fb1c497ca263a21.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_345598708681ad8ee49ecc26.png", "id": "gf_345598708681ad8ee49ecc26", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_ccddb58204416613249c24f5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_345598708681ad8ee49ecc26.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_34824651220e21336323f0fb.png", "id": "gf_34824651220e21336323f0fb", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_6aa7e7f3f07934051980c3d4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_34824651220e21336323f0fb.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_35fdf53e1ccad2cc805ad55d.png", "id": "gf_35fdf53e1ccad2cc805ad55d", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_2966fdb729f63c84594d0193", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_35fdf53e1ccad2cc805ad55d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_3610c4b0e83f6f5ea11805b4.png", "id": "gf_3610c4b0e83f6f5ea11805b4", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_194bfa1109ead10398626c21", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_3610c4b0e83f6f5ea11805b4.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_36e9eda4d39e7848538b0055.png", "id": "gf_36e9eda4d39e7848538b0055", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_d92d495c421506721c263128", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_36e9eda4d39e7848538b0055.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_36f11cb7a475ac0592dba0ec.png", "id": "gf_36f11cb7a475ac0592dba0ec", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_dd3edc8e5f8c75e747ad5db4", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_36f11cb7a475ac0592dba0ec.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_371648fc498820a8d55e092c.png", "id": "gf_371648fc498820a8d55e092c", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_e6d3b31e31447e9aa1157b3d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_371648fc498820a8d55e092c.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_3734dc8f75643a839fc590c3.png", "id": "gf_3734dc8f75643a839fc590c3", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d73aa557a11aae81c27245d3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_3734dc8f75643a839fc590c3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_37432f09f33c8f58aba849ca.png", "id": "gf_37432f09f33c8f58aba849ca", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f07ce9ae7e93c72cb01e5b43", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_37432f09f33c8f58aba849ca.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_3769b67b96076fc63c76d662.png", "id": "gf_3769b67b96076fc63c76d662", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_3769b67b96076fc63c76d662.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_37ff2cbac216291d93c117aa.png", "id": "gf_37ff2cbac216291d93c117aa", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_91e1456a27e38be6f960100f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_37ff2cbac216291d93c117aa.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_38263518aa66d238988d9393.png", "id": "gf_38263518aa66d238988d9393", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_c4ca0781be40c0002f23c79e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_38263518aa66d238988d9393.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_387226ac058eec26b5da1233.png", "id": "gf_387226ac058eec26b5da1233", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_17b8704533f004a2585330f0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_387226ac058eec26b5da1233.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_388341eaee66a92bf2f787ca.png", "id": "gf_388341eaee66a92bf2f787ca", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6b707d97009d8a2e01e078d9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_388341eaee66a92bf2f787ca.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_38a1de2a39277020e404c6e7.png", "id": "gf_38a1de2a39277020e404c6e7", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_dc227bced8fde69728ac172d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_38a1de2a39277020e404c6e7.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_38d496ae076fcb719eaa3d75.png", "id": "gf_38d496ae076fcb719eaa3d75", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_a87cfe4ac041856e8a6a8f2e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_38d496ae076fcb719eaa3d75.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_395ef6c9494d852ab7e0a547.png", "id": "gf_395ef6c9494d852ab7e0a547", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_72c72a02e1b41507595bccb0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_395ef6c9494d852ab7e0a547.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_399de9153ec0d1108c54d5c3.png", "id": "gf_399de9153ec0d1108c54d5c3", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_3dd5ebc9e9e5bdffebd598db", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_399de9153ec0d1108c54d5c3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_39bd8aca2063a0e21eb3ae3b.png", "id": "gf_39bd8aca2063a0e21eb3ae3b", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f8c97321776f16b4a0fce156", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_39bd8aca2063a0e21eb3ae3b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_39cfd8165b0b09f5638e592b.png", "id": "gf_39cfd8165b0b09f5638e592b", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_507ad89f9977e57f703e8a03", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_39cfd8165b0b09f5638e592b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_3a61402ea41de5be641f4221.png", "id": "gf_3a61402ea41de5be641f4221", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f96120bb4f163f9753167420", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_3a61402ea41de5be641f4221.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_3a72454f197b2f3e8464c707.png", "id": "gf_3a72454f197b2f3e8464c707", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_ef4117065a17f0737a2eb6d6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_3a72454f197b2f3e8464c707.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3ad29d6d7f6f5d1e29a84120.png", "id": "gf_3ad29d6d7f6f5d1e29a84120", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_a83afef3c569df008768daf1", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_3ad29d6d7f6f5d1e29a84120.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3b37398dc8fb30c719638649.png", "id": "gf_3b37398dc8fb30c719638649", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f18b180d7e23b27401aa46a7", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_3b37398dc8fb30c719638649.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_3b4169a9a624097877a7ff9d.png", "id": "gf_3b4169a9a624097877a7ff9d", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_13160f0014eebafb677683b9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_3b4169a9a624097877a7ff9d.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3ba61da4f50c491bc896a918.png", "id": "gf_3ba61da4f50c491bc896a918", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_ec2c39ae88c6d3c9e18e0420", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_3ba61da4f50c491bc896a918.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3bb5247a153f46738fde7273.png", "id": "gf_3bb5247a153f46738fde7273", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_01c9aa5522aab1a17351d4b4", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_3bb5247a153f46738fde7273.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_3bebd53c0b88c3dc98d4839b.png", "id": "gf_3bebd53c0b88c3dc98d4839b", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b8e31e66159d47f8e185ff5a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_3bebd53c0b88c3dc98d4839b.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the precompressed passive spring piston. The unbonded orange projectile can separate and strike the free wooden bar off-centre. The bar is not pinned. Continue6seconds, including impact and subsequent motion. Judge the projectile X direction immediately after its FIRST bar impact, not its final position. Visible bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_3c1eddb7f8a4b693492d28c2.png", "id": "gf_3c1eddb7f8a4b693492d28c2", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_f210334938eac714b44ecd49", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_3c1eddb7f8a4b693492d28c2.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3c3f35e1e56c45c806bcbbf8.png", "id": "gf_3c3f35e1e56c45c806bcbbf8", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_0de6d5ac8ab06e3a0f9c9524", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_3c3f35e1e56c45c806bcbbf8.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_3d3007211d493a71b05bc923.png", "id": "gf_3d3007211d493a71b05bc923", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_885c7e15c1be499ec362c10c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_3d3007211d493a71b05bc923.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_3d51ad3c576958814fdafabe.png", "id": "gf_3d51ad3c576958814fdafabe", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_51cad9c5f64c22cd8ad75c23", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_3d51ad3c576958814fdafabe.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3d52138e3236248dceaf5c57.png", "id": "gf_3d52138e3236248dceaf5c57", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_e31bcbf9ffc430545418fe50", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_3d52138e3236248dceaf5c57.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_3df834ce3c9dcf0a92eda69c.png", "id": "gf_3df834ce3c9dcf0a92eda69c", "observation_time_s": 0.1, "original_partition": "train", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_3df834ce3c9dcf0a92eda69c.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_3e637619659556439386f2e1.png", "id": "gf_3e637619659556439386f2e1", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_90599df77bf6632e8ed6ec0b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_right", "reference_video": "references/gf_3e637619659556439386f2e1.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_3ea1a3b307ba4c2db55a7344.png", "id": "gf_3ea1a3b307ba4c2db55a7344", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_5a0214f49cc8cf2644af80ea", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_3ea1a3b307ba4c2db55a7344.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_3edfe97a39c1aa5cccbd1a46.png", "id": "gf_3edfe97a39c1aa5cccbd1a46", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_91485177e4fbcfef8d2d05c8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_3edfe97a39c1aa5cccbd1a46.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_3f16ee29d95d8a477a2c4357.png", "id": "gf_3f16ee29d95d8a477a2c4357", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_426aaf0b0e8aa75a9868efa8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_3f16ee29d95d8a477a2c4357.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3f2ec9b3b40c21bc4ebbdd33.png", "id": "gf_3f2ec9b3b40c21bc4ebbdd33", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_2cae1c6cd0096f7746e7ca6f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_3f2ec9b3b40c21bc4ebbdd33.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_3f6c616b5cbcb7190d5cb7ea.png", "id": "gf_3f6c616b5cbcb7190d5cb7ea", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_65f7505c1e615dc84c8a2283", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_3f6c616b5cbcb7190d5cb7ea.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3f854b0359b8d10924daaa1d.png", "id": "gf_3f854b0359b8d10924daaa1d", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_43b815cccf39f4de273dc435", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_3f854b0359b8d10924daaa1d.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_3f8c86e9370c93ad88c7be39.png", "id": "gf_3f8c86e9370c93ad88c7be39", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3a340e7f772f932e7c4fcb27", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_3f8c86e9370c93ad88c7be39.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_3fe49154013f8e171d1d5cc3.png", "id": "gf_3fe49154013f8e171d1d5cc3", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_551c756d538813d187b6dfe5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_3fe49154013f8e171d1d5cc3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_3ff9faa2691af8f59caba9ed.png", "id": "gf_3ff9faa2691af8f59caba9ed", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5b4ddcfc0d6bbd658ad0fff8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_3ff9faa2691af8f59caba9ed.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_4000aa821de901f63e9e6cf1.png", "id": "gf_4000aa821de901f63e9e6cf1", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_aaac4322add966991a4593a7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_4000aa821de901f63e9e6cf1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_407e841ba3bb47a1b9ca79c6.png", "id": "gf_407e841ba3bb47a1b9ca79c6", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_9ec9b68aabe1400149be289a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_left", "reference_video": "references/gf_407e841ba3bb47a1b9ca79c6.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_4166b39663e750b404127874.png", "id": "gf_4166b39663e750b404127874", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_046fe40f677796f4895a30ee", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_4166b39663e750b404127874.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_41905848ae38832a8ad8a31e.png", "id": "gf_41905848ae38832a8ad8a31e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_86006860bdfb56c78a25de48", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_41905848ae38832a8ad8a31e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_41be088cfbe47791730605e4.png", "id": "gf_41be088cfbe47791730605e4", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_3054e25229266ba918bbb5d0", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_41be088cfbe47791730605e4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_4212f16bcde3e8c30da32f45.png", "id": "gf_4212f16bcde3e8c30da32f45", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1544c70dfb44efd16272f359", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_4212f16bcde3e8c30da32f45.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_4223ed32365f28149b1be5b4.png", "id": "gf_4223ed32365f28149b1be5b4", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_747017b0835a1736a3838925", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_4223ed32365f28149b1be5b4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_4247567526eca36d73b984ed.png", "id": "gf_4247567526eca36d73b984ed", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_510fe142df9c4050255cf35a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_4247567526eca36d73b984ed.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_429d489dead1f6c909f5d108.png", "id": "gf_429d489dead1f6c909f5d108", "observation_time_s": 2.166666666666667, "original_partition": "development", "pair_id": "pair_8970ec70cbb8bfd91d3c051b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_429d489dead1f6c909f5d108.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.2 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_42b26af824d95145fec404e6.png", "id": "gf_42b26af824d95145fec404e6", "observation_time_s": 2.166666666666667, "original_partition": "development", "pair_id": "pair_8970ec70cbb8bfd91d3c051b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_42b26af824d95145fec404e6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.2 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_42feb49711d26cc12db453b3.png", "id": "gf_42feb49711d26cc12db453b3", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_13870bf04aa440df98fbc25a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_42feb49711d26cc12db453b3.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_4328fbe9cda23e3d5c9526c9.png", "id": "gf_4328fbe9cda23e3d5c9526c9", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": "pair_abcc477edbedc1e20213f037", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_4328fbe9cda23e3d5c9526c9.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_436e147a40c97c91ab0141ef.png", "id": "gf_436e147a40c97c91ab0141ef", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_575f128bbc8e245cb9b1c65a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_436e147a40c97c91ab0141ef.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_4399197f17e3a5a0f9b305bc.png", "id": "gf_4399197f17e3a5a0f9b305bc", "observation_time_s": 0.1, "original_partition": "train", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_4399197f17e3a5a0f9b305bc.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_43ea2cd9d466967e8be80ecc.png", "id": "gf_43ea2cd9d466967e8be80ecc", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_7bb0a86e8f5413f97511057f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_43ea2cd9d466967e8be80ecc.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_443495a35a41da5e9aab2a41.png", "id": "gf_443495a35a41da5e9aab2a41", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_ea3d3a11cccec7870a368a7b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "retained", "reference_video": "references/gf_443495a35a41da5e9aab2a41.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the block on the inclined surface under gravity. It can contact and compress the finite passive spring piston, then may separate; it is not attached to the spring. Continue6seconds under the stated native contact friction and ideal spring/guide conditions. Determine whether block and piston separate after their first contact within the video window, not merely whether the initial frame has a gap. No terminal-rest requirement.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_4442eeb111de4c47c894a3e9.png", "id": "gf_4442eeb111de4c47c894a3e9", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_540d71fc67e0d63fbf7cef93", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_4442eeb111de4c47c894a3e9.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_4474a3658541531cf9a2f348.png", "id": "gf_4474a3658541531cf9a2f348", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_510fe142df9c4050255cf35a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_4474a3658541531cf9a2f348.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_447507d79b30f75ff4628f98.png", "id": "gf_447507d79b30f75ff4628f98", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_6d2bb998ce8e3d0fbdb148d2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_447507d79b30f75ff4628f98.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_447f1f77112ea1f22dfea052.png", "id": "gf_447f1f77112ea1f22dfea052", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_48f05aac891a45781cd3fc66", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_447f1f77112ea1f22dfea052.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_44a8f5582b0e9cce98248305.png", "id": "gf_44a8f5582b0e9cce98248305", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_c8a9c755e7988a3568e0e8fb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_44a8f5582b0e9cce98248305.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_461a2974a0195eb4840f1c76.png", "id": "gf_461a2974a0195eb4840f1c76", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_c7eb90095bb634418883c113", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_461a2974a0195eb4840f1c76.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_463c3bef854af9eb25b4c3d7.png", "id": "gf_463c3bef854af9eb25b4c3d7", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_d56dae75ef47dbb9e941667f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_463c3bef854af9eb25b4c3d7.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_46938f698b7860e38a9dfa94.png", "id": "gf_46938f698b7860e38a9dfa94", "observation_time_s": 0.5, "original_partition": "development", "pair_id": "pair_290fe23c5c71d2c2ee6a44cc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5333333333333333, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_46938f698b7860e38a9dfa94.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.8 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.50000000 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_46bb87328103e715bb49d949.png", "id": "gf_46bb87328103e715bb49d949", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_ec64490dbfe0e9d6423e5e26", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_46bb87328103e715bb49d949.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_474f54cce9e3221a522ff26b.png", "id": "gf_474f54cce9e3221a522ff26b", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_08b016f37061ebe2d6949c20", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_474f54cce9e3221a522ff26b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_47b8a450167414d341dcad76.png", "id": "gf_47b8a450167414d341dcad76", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_7ded406d6171a02474971fd6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_47b8a450167414d341dcad76.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The loaded lever is released under gravity about its fixed hinge, with a passive stop on the left. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "lever_release_under_gravity"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_47ba1a3404261f28ca49d020.png", "id": "gf_47ba1a3404261f28ca49d020", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0b1346b19a376fa29b01a4d7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_47ba1a3404261f28ca49d020.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_47bd8979af270ffc042fc328.png", "id": "gf_47bd8979af270ffc042fc328", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_ae1186054c0ef70be086f6ed", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_47bd8979af270ffc042fc328.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_48013b3600024a777befb043.png", "id": "gf_48013b3600024a777befb043", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_837f7e7ca6532f9f735e9335", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_48013b3600024a777befb043.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_489fc743a74211273bdfd425.png", "id": "gf_489fc743a74211273bdfd425", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_0ceffbd481df74a276f1b82d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_489fc743a74211273bdfd425.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_48dfe42c5c1f974cb950644d.png", "id": "gf_48dfe42c5c1f974cb950644d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_059c4adc2534f24c91cc00de", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_48dfe42c5c1f974cb950644d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_4925246bce249dc7e10af2f7.png", "id": "gf_4925246bce249dc7e10af2f7", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b417973ac8c59dc9d70d5360", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_4925246bce249dc7e10af2f7.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_495d47aece65b546f4da38c6.png", "id": "gf_495d47aece65b546f4da38c6", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_0370d95f66dd07a65b222320", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_495d47aece65b546f4da38c6.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_49c5d0dd9a2cc5cac9729cc0.png", "id": "gf_49c5d0dd9a2cc5cac9729cc0", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_2a4c66cc72b202c8daa94127", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_49c5d0dd9a2cc5cac9729cc0.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_49fedc49edb3f82fccd58a64.png", "id": "gf_49fedc49edb3f82fccd58a64", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_43b815cccf39f4de273dc435", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_49fedc49edb3f82fccd58a64.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_4a48f689cfbff7b3dfd515da.png", "id": "gf_4a48f689cfbff7b3dfd515da", "observation_time_s": 0.4666666666666667, "original_partition": "development", "pair_id": "pair_4bd1ca5a773b48b5183408ab", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_4a48f689cfbff7b3dfd515da.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.6 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.46666667 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_4abdd33c53f913e5908886e4.png", "id": "gf_4abdd33c53f913e5908886e4", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_454349acd778638f3e1d3a93", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_4abdd33c53f913e5908886e4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_4adf885ecd6c83221fe06c75.png", "id": "gf_4adf885ecd6c83221fe06c75", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_0c04fdd0dcbd86ebc18485ed", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_4adf885ecd6c83221fe06c75.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_4b55eca8326c5a886b979412.png", "id": "gf_4b55eca8326c5a886b979412", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_58fcc412675a4812e7f2a2c8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_4b55eca8326c5a886b979412.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_4d47240710769ee221dc9b22.png", "id": "gf_4d47240710769ee221dc9b22", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_e5ac348e0144292bd75cf87a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_4d47240710769ee221dc9b22.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_4d4be38bb7b4a51d312c4987.png", "id": "gf_4d4be38bb7b4a51d312c4987", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_eb4cc35f644345b2267c5029", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_4d4be38bb7b4a51d312c4987.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_4d5ea5416eab834444de93d7.png", "id": "gf_4d5ea5416eab834444de93d7", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_fea9e6766ec150bce165897e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_4d5ea5416eab834444de93d7.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_4dce8721202d1ff37eed70d8.png", "id": "gf_4dce8721202d1ff37eed70d8", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4ea5ff46d1263515e0518ab3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_4dce8721202d1ff37eed70d8.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_4df3c3ad3aa0bd19bb863057.png", "id": "gf_4df3c3ad3aa0bd19bb863057", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_93ad8e7a369bdcf78f5583eb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_4df3c3ad3aa0bd19bb863057.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_4df910a1c9d3ad2841030856.png", "id": "gf_4df910a1c9d3ad2841030856", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_5d60b0797c09c272517ec460", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_4df910a1c9d3ad2841030856.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_4e0d7026b11f2e88dfaf23e5.png", "id": "gf_4e0d7026b11f2e88dfaf23e5", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_2a3d1993f0e5b1ac16a4ba3d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_4e0d7026b11f2e88dfaf23e5.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. An orange finite spherical bob of radius 0.11 m and mass 1.1 kg is connected to an ideal frictionless planar pivot by a massless rigid link. Pivot-to-centre distance is 1.05 m. The blue free uniform box has width/depth/height [0.26, 0.26, 1.0] m and mass 2.2 kg, resting on a horizontal floor. Contact friction and restitution are zero. The box is free to move when contacted.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_4e336ac54788434364399f3b.png", "id": "gf_4e336ac54788434364399f3b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_4edb993d61ae2f8adff0b125", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_4e336ac54788434364399f3b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_4e7109a14aed13b079ceb4dd.png", "id": "gf_4e7109a14aed13b079ceb4dd", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_10159a996f41aec94f0d3a74", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_4e7109a14aed13b079ceb4dd.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_4e902a31e2707d84c7b50cef.png", "id": "gf_4e902a31e2707d84c7b50cef", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_595391df2f4c6eef7114b219", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_4e902a31e2707d84c7b50cef.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_4ebcc8c83923d50078601aa6.png", "id": "gf_4ebcc8c83923d50078601aa6", "observation_time_s": 0.1, "original_partition": "test", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_4ebcc8c83923d50078601aa6.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_4f2a6bf628289a865a827bcb.png", "id": "gf_4f2a6bf628289a865a827bcb", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_749a742068d0e66cfb449a46", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_4f2a6bf628289a865a827bcb.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_4f2cebfc1ed0be1af9de9b3c.png", "id": "gf_4f2cebfc1ed0be1af9de9b3c", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_454349acd778638f3e1d3a93", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_4f2cebfc1ed0be1af9de9b3c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_4ffcfb679faa0a57e3a4ace8.png", "id": "gf_4ffcfb679faa0a57e3a4ace8", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_be2469d8168f668e155c6e34", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_4ffcfb679faa0a57e3a4ace8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_501813b383ce2a69ac7af3f1.png", "id": "gf_501813b383ce2a69ac7af3f1", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_f210334938eac714b44ecd49", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_501813b383ce2a69ac7af3f1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_505bd2a363327d1e19da851a.png", "id": "gf_505bd2a363327d1e19da851a", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_cfb854282e38a7888947dac4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_505bd2a363327d1e19da851a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_517dd900f527be479a52b8c3.png", "id": "gf_517dd900f527be479a52b8c3", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_eed21725c153bb7ad2a0d326", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_517dd900f527be479a52b8c3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_517ee0bc321cb09527bd80ee.png", "id": "gf_517ee0bc321cb09527bd80ee", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f98824418929e22cc01bab96", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_517ee0bc321cb09527bd80ee.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_52086f5c66649b22181beb10.png", "id": "gf_52086f5c66649b22181beb10", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_4e9482b27db7ee8ae9857d21", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_52086f5c66649b22181beb10.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_52f9c08895036e58a18d62a3.png", "id": "gf_52f9c08895036e58a18d62a3", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_530a7b880c0cc03c7290f48e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_52f9c08895036e58a18d62a3.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_53967094bf11bd339ca60562.png", "id": "gf_53967094bf11bd339ca60562", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f8b1d977ab1def2ec2895465", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_53967094bf11bd339ca60562.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_55498ecf5d7f7704a05f8913.png", "id": "gf_55498ecf5d7f7704a05f8913", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6c34cee1218dfe5d6ae342fe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_55498ecf5d7f7704a05f8913.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. An orange finite spherical bob of radius 0.1 m and mass 0.8 kg is connected to an ideal frictionless planar pivot by a massless rigid link. Pivot-to-centre distance is 0.9 m. The blue free uniform box has width/depth/height [0.22, 0.24, 0.95] m and mass 1.8 kg, resting on a horizontal floor. Contact friction and restitution are zero. The box is free to move when contacted.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_558fcace1fe7ad6311e444ac.png", "id": "gf_558fcace1fe7ad6311e444ac", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_084ff66f9849065b062046cf", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_558fcace1fe7ad6311e444ac.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. Two uniform rectangular rigid rods are joined end to end by a frictionless hinge; the upper rod is hinged to the fixed support. Both rods are 0.65 m long, 0.04 m thick and 0.06 m deep, and each has mass 0.5 kg. They move in one vertical plane. Both are released from rest under gravity (9.81 m/s^2), without damping, motors, air resistance or external pushes. Continue their coupled motion for 4 seconds at real-time speed; keep the camera fixed.", "task": "upper_rod_horizontal_direction_at_0_2_s"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_55d07b1f9db96cf83648c36f.png", "id": "gf_55d07b1f9db96cf83648c36f", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_d18dfe8bb5c7c672c0f92ea6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_55d07b1f9db96cf83648c36f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_56729048b612221fe354c6b2.png", "id": "gf_56729048b612221fe354c6b2", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_80d44e83b9c586bde9930a0c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_56729048b612221fe354c6b2.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_56a4b6e692ba864c2335da6e.png", "id": "gf_56a4b6e692ba864c2335da6e", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f133e136daaab2732f3da76a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_56a4b6e692ba864c2335da6e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_56b5daf2042d17e51bd2c468.png", "id": "gf_56b5daf2042d17e51bd2c468", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_c2be07924fbb77c0fe6f6b47", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_56b5daf2042d17e51bd2c468.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_5716525cf0f1e963e973171b.png", "id": "gf_5716525cf0f1e963e973171b", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_319f44cb154ad0783b50a82c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_5716525cf0f1e963e973171b.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_5725001e3010e0ba67df5ed9.png", "id": "gf_5725001e3010e0ba67df5ed9", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_69428dd42069c7b4c4eba005", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_5725001e3010e0ba67df5ed9.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_5755c385e56a0304010088ca.png", "id": "gf_5755c385e56a0304010088ca", "observation_time_s": 0.1, "original_partition": "train", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_5755c385e56a0304010088ca.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_576849b4f8a314a43e717ddf.png", "id": "gf_576849b4f8a314a43e717ddf", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_96fa0511d9cf7f517b40706e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_576849b4f8a314a43e717ddf.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_57766ed0add67a099c3a96f4.png", "id": "gf_57766ed0add67a099c3a96f4", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_58095a2fee73b270d372067a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_57766ed0add67a099c3a96f4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_57802410d766f496cc7f0c30.png", "id": "gf_57802410d766f496cc7f0c30", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_ba4c109f06987f17d1a7ce17", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_57802410d766f496cc7f0c30.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["left_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_57be3202579ad1ff654c9c72.png", "id": "gf_57be3202579ad1ff654c9c72", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_97860e7d64e95f8cffda4c10", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_57be3202579ad1ff654c9c72.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. Three pendulums are released simultaneously from rest under gravity (9.81 m/s^2). Each bob is a uniform solid sphere of radius 0.08 m and mass 0.5 kg. The straight suspension links are massless and rigidly attached to their bobs, with ideal frictionless planar pivots; they remain taut. There is no air resistance, damping, motor or collision between bobs. Continue their natural motion for 4 seconds at real-time speed; keep the camera fixed.", "task": "which_pendulum_first_crosses_lowest_position"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_57ea64c6128858f422ee01fe.png", "id": "gf_57ea64c6128858f422ee01fe", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f514c76b329afbc93f7f8070", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_57ea64c6128858f422ee01fe.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_5811f592026c120581480535.png", "id": "gf_5811f592026c120581480535", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_e6ff48322153f13fd2fafdfa", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_5811f592026c120581480535.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_58290a688c0ed4cc2fb460c0.png", "id": "gf_58290a688c0ed4cc2fb460c0", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_7f6b7b9e8d4a61d5778edc0f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_58290a688c0ed4cc2fb460c0.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_583b7c0a98f97133cf005b95.png", "id": "gf_583b7c0a98f97133cf005b95", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e400146688016df7a7724be3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_583b7c0a98f97133cf005b95.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_5903bf370f1669e8f3914065.png", "id": "gf_5903bf370f1669e8f3914065", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_dd7a99b6444ffe6d00880f7c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_5903bf370f1669e8f3914065.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_59966571211be1a53bcdb1f1.png", "id": "gf_59966571211be1a53bcdb1f1", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_df80932b0b8cf6d0fdc5f14d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_59966571211be1a53bcdb1f1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_59be1511e23e298bb16a2652.png", "id": "gf_59be1511e23e298bb16a2652", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4f01c501e1bb7997109a301e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_59be1511e23e298bb16a2652.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_59c6c6e9a5920e0755a602cd.png", "id": "gf_59c6c6e9a5920e0755a602cd", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_97352fc81201868baaba8b24", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_59c6c6e9a5920e0755a602cd.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_5a3d274172eb1306ab369671.png", "id": "gf_5a3d274172eb1306ab369671", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_abddc8930b767a789cb34a5a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_5a3d274172eb1306ab369671.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_5a47e53468fe772441ebd9ab.png", "id": "gf_5a47e53468fe772441ebd9ab", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f78a6b48e75c47cdca793a5d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_5a47e53468fe772441ebd9ab.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_5a53c8689c5bffe21228f95f.png", "id": "gf_5a53c8689c5bffe21228f95f", "observation_time_s": 0.1, "original_partition": "train", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_5a53c8689c5bffe21228f95f.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_5ad66634200bda91152f0c00.png", "id": "gf_5ad66634200bda91152f0c00", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_970efb2afbf7c9b568705869", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_5ad66634200bda91152f0c00.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_5adc838a2d0ae2a64dfb27f9.png", "id": "gf_5adc838a2d0ae2a64dfb27f9", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_5e684a036de51bf1c7530135", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_5adc838a2d0ae2a64dfb27f9.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The orange solid sphere is released from rest and rolls down the ramp toward the initially stationary light-colored sphere. Predict the subsequent motion. There are no hands or active drives. Shared contact assumptions for all samples: equal solid spheres of radius 0.18 m and mass 1 kg; g=9.81 m/s^2; smooth sphere-sphere collisions with restitution 0.8; sphere-support Coulomb friction 0.4; while loaded on the support, each sphere experiences passive torque tau=-2*I*omega. Keep the camera and scene unchanged.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_5b0a42328acf5d9612667c76.png", "id": "gf_5b0a42328acf5d9612667c76", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_fa2155b2250db5f1bda19463", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_5b0a42328acf5d9612667c76.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_5b3165e8b2fbdfce345fa619.png", "id": "gf_5b3165e8b2fbdfce345fa619", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f5546673551ba1c4d9cd55e4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_5b3165e8b2fbdfce345fa619.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the precompressed passive spring piston. The unbonded orange projectile can separate and strike the free wooden bar off-centre. The bar is not pinned. Continue6seconds, including impact and subsequent motion. Judge the projectile X direction immediately after its FIRST bar impact, not its final position. Visible bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_5b4be3d745381e51efd51d5b.png", "id": "gf_5b4be3d745381e51efd51d5b", "observation_time_s": 2.466666666666667, "original_partition": "validation", "pair_id": "pair_d70611285d174082c3c0382e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_5b4be3d745381e51efd51d5b.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_5bab141fb1669d8fba98647c.png", "id": "gf_5bab141fb1669d8fba98647c", "observation_time_s": 2.466666666666667, "original_partition": "validation", "pair_id": "pair_d70611285d174082c3c0382e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_5bab141fb1669d8fba98647c.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_5c3a4322a01cc2a73f4f46fd.png", "id": "gf_5c3a4322a01cc2a73f4f46fd", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_b85bf2aa069a0552191fcced", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_5c3a4322a01cc2a73f4f46fd.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_5c7946cf979058f7171dc08d.png", "id": "gf_5c7946cf979058f7171dc08d", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_76d83b0bbd9af0f1a7348a88", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_5c7946cf979058f7171dc08d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_5d1c86f2594f84e2cce6f3e6.png", "id": "gf_5d1c86f2594f84e2cce6f3e6", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_28ed454fff18ee3a5fc18154", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_5d1c86f2594f84e2cce6f3e6.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_5d20f1dd6f41d507658dd38b.png", "id": "gf_5d20f1dd6f41d507658dd38b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_b63c69564441d90bac62dcdc", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_5d20f1dd6f41d507658dd38b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_5d33169b805555d59b74553a.png", "id": "gf_5d33169b805555d59b74553a", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_b822cf68892ed2875b2b1a65", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_5d33169b805555d59b74553a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_5d720987ed3c45269f79973f.png", "id": "gf_5d720987ed3c45269f79973f", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_86e98ae29a16558b463dca68", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_5d720987ed3c45269f79973f.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_5d8be76927ba89f3908a2c17.png", "id": "gf_5d8be76927ba89f3908a2c17", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_d76162d82f46e3bd57340b73", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_5d8be76927ba89f3908a2c17.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_5e216955688a995cd9e0e8e4.png", "id": "gf_5e216955688a995cd9e0e8e4", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_6b79fe5c008ce46be0b6c958", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_5e216955688a995cd9e0e8e4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_5e71f353bee70e50defe2c13.png", "id": "gf_5e71f353bee70e50defe2c13", "observation_time_s": 2.166666666666667, "original_partition": "development", "pair_id": "pair_941eb3c7643622e2b6b2617a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_5e71f353bee70e50defe2c13.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.2 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_5e72cf87ddc903b2131d12d8.png", "id": "gf_5e72cf87ddc903b2131d12d8", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6b9801d86cdb2abbc01b401b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_5e72cf87ddc903b2131d12d8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_5ede6071ba4e2395b9d76c22.png", "id": "gf_5ede6071ba4e2395b9d76c22", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_d0423f0765da858fa4670ecf", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_5ede6071ba4e2395b9d76c22.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_5f04457b9677dd731a9044bf.png", "id": "gf_5f04457b9677dd731a9044bf", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e07bd19b2bb322449262ce3f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_5f04457b9677dd731a9044bf.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_5f2248cff37ce312965e76a0.png", "id": "gf_5f2248cff37ce312965e76a0", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9418e50cb74246807e1496c9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_5f2248cff37ce312965e76a0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_5f8dfbcf4f926ae10c98638c.png", "id": "gf_5f8dfbcf4f926ae10c98638c", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4c1b7d2354e8ac8786e1fe90", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_5f8dfbcf4f926ae10c98638c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_5f9b92e6c9b561b907c30d11.png", "id": "gf_5f9b92e6c9b561b907c30d11", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0d3a0b75080dbc38d6b5cfb1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_5f9b92e6c9b561b907c30d11.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_5fa6445b9e549d6c00351af8.png", "id": "gf_5fa6445b9e549d6c00351af8", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_ab3b1730c4c16faa85c786ba", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_5fa6445b9e549d6c00351af8.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_5fe15b95f6c496d3477af6fe.png", "id": "gf_5fe15b95f6c496d3477af6fe", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_408749185693a9b5bed305b3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_5fe15b95f6c496d3477af6fe.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_60ba202c62df6c7e75fa1235.png", "id": "gf_60ba202c62df6c7e75fa1235", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_bd203e55a22ac214feab4f7d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_60ba202c62df6c7e75fa1235.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_60e112a82c5e36660b7b655b.png", "id": "gf_60e112a82c5e36660b7b655b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f1732893c538ceb68e04a06c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_60e112a82c5e36660b7b655b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6109be20f0353657120ce21c.png", "id": "gf_6109be20f0353657120ce21c", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_111508042a552dc15b1bb1bc", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_6109be20f0353657120ce21c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_614daf27f55fc177a58d523c.png", "id": "gf_614daf27f55fc177a58d523c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6fcff65d2f946339508e83e4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_614daf27f55fc177a58d523c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_618980fa7fdf21ff334af57a.png", "id": "gf_618980fa7fdf21ff334af57a", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_a09fcdb1c0be5eaa379c5370", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_618980fa7fdf21ff334af57a.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_61eb6b2e1f4f03b9e1e6c8ce.png", "id": "gf_61eb6b2e1f4f03b9e1e6c8ce", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_90b84c9234cc396fad52bd2c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_61eb6b2e1f4f03b9e1e6c8ce.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_61ed1799ee0d596ede73a968.png", "id": "gf_61ed1799ee0d596ede73a968", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1b806bbd0346cc796ae8f88e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_61ed1799ee0d596ede73a968.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_61f5a80e7ec32d2892d6e79f.png", "id": "gf_61f5a80e7ec32d2892d6e79f", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a4b79342b06c85f0d8dfef9f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_61f5a80e7ec32d2892d6e79f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_61fae2b04f883ce20ad77e27.png", "id": "gf_61fae2b04f883ce20ad77e27", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_3bf1c15f79d423517f82fb04", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_61fae2b04f883ce20ad77e27.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_62034c4b05b796757c37505b.png", "id": "gf_62034c4b05b796757c37505b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_6baf6b89cda7da72363c993c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_62034c4b05b796757c37505b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_62c26ba34a167f682f056909.png", "id": "gf_62c26ba34a167f682f056909", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_ab3b1730c4c16faa85c786ba", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_62c26ba34a167f682f056909.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "time_countercontrol", "first_frame": "first_frames/gf_62c89fd103d01e6ad0da0fea.png", "id": "gf_62c89fd103d01e6ad0da0fea", "observation_time_s": 0.8, "original_partition": "development", "pair_id": "pair_bb30a631c1e97baa55781a83", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.8333333333333334, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_62c89fd103d01e6ad0da0fea.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.2 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.80000000 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_62c9944fee7bba39d07a569a.png", "id": "gf_62c9944fee7bba39d07a569a", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_50d763a55900962d3e9d5549", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_62c9944fee7bba39d07a569a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6302b9245c14ef376fa785ec.png", "id": "gf_6302b9245c14ef376fa785ec", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_9c96d935d032c83fb983c82f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_6302b9245c14ef376fa785ec.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_63c872a622edd56be9207e1b.png", "id": "gf_63c872a622edd56be9207e1b", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_4e9482b27db7ee8ae9857d21", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_63c872a622edd56be9207e1b.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_643c791e2dcccb19beff3a89.png", "id": "gf_643c791e2dcccb19beff3a89", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_df5f301a432d8f608fb3690d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_643c791e2dcccb19beff3a89.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform solid orange spherical pendulum bob and a free blue rectangular target are initially at rest. The bob has radius 0.12 m and mass 1 kg. Its centre is 1 m from the ideal frictionless planar pivot, connected by a massless rigid suspension link. The free target is 0.24 m wide, 0.24 m deep and 1 m high, with mass 2 kg, resting on a horizontal floor. Release the bob under gravity (9.81 m/s^2). Contacts have zero friction and restitution; there are no motors, damping, people or external pushes. Continue their natural motion for 4 seconds at real-time speed, keeping the camera fixed. The target is free to move if contacted.", "task": "pendulum_first_swing_hits_target"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_6494b353dc9fc5d2d2780dab.png", "id": "gf_6494b353dc9fc5d2d2780dab", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_b370e9a8f87e620fef76720b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_6494b353dc9fc5d2d2780dab.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_64bdcb3facd9e9de2aca6f35.png", "id": "gf_64bdcb3facd9e9de2aca6f35", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4b501d81604a6c280119d783", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_64bdcb3facd9e9de2aca6f35.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_64f61ae80d2a2c53da073fbb.png", "id": "gf_64f61ae80d2a2c53da073fbb", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_63f5aa1928900767a21529e1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_64f61ae80d2a2c53da073fbb.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6541199d40327df3495dbd11.png", "id": "gf_6541199d40327df3495dbd11", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f21d2d4b46f573f075342b92", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_6541199d40327df3495dbd11.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_65ba630969c7f2152b97fa31.png", "id": "gf_65ba630969c7f2152b97fa31", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_e7064df822c9bfcb26c6304d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_65ba630969c7f2152b97fa31.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_65df448b1157fdd1a8ebabb9.png", "id": "gf_65df448b1157fdd1a8ebabb9", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_96fbc536fa002a6037c29c11", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_65df448b1157fdd1a8ebabb9.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_65ebc2f180d37653833a567c.png", "id": "gf_65ebc2f180d37653833a567c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_8dd6275468423fdb14c956c8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_65ebc2f180d37653833a567c.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_66a49648c9ce862f7550f40d.png", "id": "gf_66a49648c9ce862f7550f40d", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3f67f6ae4aeb31fd7a4ffb10", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_66a49648c9ce862f7550f40d.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_66d1d1db33f906aad77c31cb.png", "id": "gf_66d1d1db33f906aad77c31cb", "observation_time_s": 2.1666666666666665, "original_partition": "test", "pair_id": "pair_97c277a43ea95b444e496e85", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_66d1d1db33f906aad77c31cb.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["left", "right"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_66d8480584d222b952067067.png", "id": "gf_66d8480584d222b952067067", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_b18b1bc5fd4650e1a09db81d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_66d8480584d222b952067067.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the motion under gravity, passive friction and stored spring energy, with no active drive or external push. The visible guides represent ideal translation constraints. Springs transmit force through the stated native finite-piston/stop mechanism; an unbonded block can separate. Use the common physical constants. Keep the camera fixed and use real-time speed.", "task": "left_block_direction_at_0_2_s"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_6778b2ddcfff2c28c13001aa.png", "id": "gf_6778b2ddcfff2c28c13001aa", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_aa81a4da80cd56d188edb868", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_6778b2ddcfff2c28c13001aa.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_67a074c0c45bfeb1965f1418.png", "id": "gf_67a074c0c45bfeb1965f1418", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_e0cc0dddf69d923e8e645ec8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_67a074c0c45bfeb1965f1418.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_67c086a9d50558eb8968070f.png", "id": "gf_67c086a9d50558eb8968070f", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_146a9e71312298814aaee02b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_67c086a9d50558eb8968070f.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["left_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_67c86cf1bc75c3e9b86193e2.png", "id": "gf_67c86cf1bc75c3e9b86193e2", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1363e16cfb1f875d9951f88e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_67c86cf1bc75c3e9b86193e2.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. Three pendulums are released simultaneously from rest under gravity (9.81 m/s^2). Each bob is a uniform solid sphere of radius 0.08 m and mass 0.5 kg. The straight suspension links are massless and rigidly attached to their bobs, with ideal frictionless planar pivots; they remain taut. There is no air resistance, damping, motor or collision between bobs. Continue their natural motion for 4 seconds at real-time speed; keep the camera fixed.", "task": "which_pendulum_first_crosses_lowest_position"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_681e9e20412936296cc0f5be.png", "id": "gf_681e9e20412936296cc0f5be", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b417973ac8c59dc9d70d5360", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_681e9e20412936296cc0f5be.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_68629f88ee5a3f6e21f21c9f.png", "id": "gf_68629f88ee5a3f6e21f21c9f", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_a3dae4dd869dcc49e5d03ae5", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_68629f88ee5a3f6e21f21c9f.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_688ce272808ed113f118e58c.png", "id": "gf_688ce272808ed113f118e58c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1ac14d31f7355746b854776f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_688ce272808ed113f118e58c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_68e1840395af38f04934f336.png", "id": "gf_68e1840395af38f04934f336", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_a1c409a1867cf38db299b57e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_68e1840395af38f04934f336.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_696de13c299c9ea3e6759148.png", "id": "gf_696de13c299c9ea3e6759148", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_f34aa2038f50a26384e7480d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_left", "reference_video": "references/gf_696de13c299c9ea3e6759148.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_698e5781e68701dd57e990da.png", "id": "gf_698e5781e68701dd57e990da", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f1fa88f4fe6ea6436eacd9c5", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_698e5781e68701dd57e990da.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_6a00200e83dac2588cab1a46.png", "id": "gf_6a00200e83dac2588cab1a46", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_93642ee14695ff2571e114be", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_6a00200e83dac2588cab1a46.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6a3d518de8f4c14b4e7cad37.png", "id": "gf_6a3d518de8f4c14b4e7cad37", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_2a4c66cc72b202c8daa94127", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_6a3d518de8f4c14b4e7cad37.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6ab94c7d6b56805e6b08fa09.png", "id": "gf_6ab94c7d6b56805e6b08fa09", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f8fe068e4c5912994de22865", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_6ab94c7d6b56805e6b08fa09.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6adde006d25574b802d4aef9.png", "id": "gf_6adde006d25574b802d4aef9", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_8e172dae7b6e16382284fb85", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_6adde006d25574b802d4aef9.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_6b26be3f12ce8fee4e19ce8d.png", "id": "gf_6b26be3f12ce8fee4e19ce8d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_65b369ba4016d45b0763c9ed", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_6b26be3f12ce8fee4e19ce8d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6b6c163067e19aae948202f4.png", "id": "gf_6b6c163067e19aae948202f4", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_5f1cd276df4e93425420f981", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_6b6c163067e19aae948202f4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["left", "right"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_6b6d4e5ec4bb83d638b6ef10.png", "id": "gf_6b6d4e5ec4bb83d638b6ef10", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_78b3c8138cb207a6b8ff975a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_6b6d4e5ec4bb83d638b6ef10.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the motion under gravity, passive friction and stored spring energy, with no active drive or external push. The visible guides represent ideal translation constraints. Springs transmit force through the stated native finite-piston/stop mechanism; an unbonded block can separate. Use the common physical constants. Keep the camera fixed and use real-time speed.", "task": "base_direction_at_0_2_s"}
{"allowed_labels": ["downhill", "uphill"], "category": "contact", "condition": "A", "construction_subset": "parameter_conditioned_single_first_frame", "first_frame": "first_frames/gf_6b84887a5d2cd9c07f5728d9.png", "id": "gf_6b84887a5d2cd9c07f5728d9", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_6b221364d2fec9e9a0e26bc1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "downhill", "reference_video": "references/gf_6b84887a5d2cd9c07f5728d9.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the subsequent motion under gravity, the permanently attached preloaded ideal Hooke spring, passive friction, and the ideal massless inextensible rope. There are no hands, active motors or external pushes. Keep the scene and camera unchanged; use realistic physics and real-time speed. Use the shared physical conditions provided with this apparatus. Do not infer the spring rest length or hidden mass/inertia from color.", "task": "A_initial_slope_direction_at_0_2_s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6ba8e8dc414ec25cf0265c7d.png", "id": "gf_6ba8e8dc414ec25cf0265c7d", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_89aa8a000f2237cbe27aea02", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_6ba8e8dc414ec25cf0265c7d.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6c307c022ef6a8f73f982799.png", "id": "gf_6c307c022ef6a8f73f982799", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_c54b2fc8b84b5e468f7a708f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_6c307c022ef6a8f73f982799.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_6cdee1c89647da6f248b6db9.png", "id": "gf_6cdee1c89647da6f248b6db9", "observation_time_s": 0.5, "original_partition": "development", "pair_id": "pair_8c6b8d65bcf2ed23a888786d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5333333333333333, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_6cdee1c89647da6f248b6db9.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.8 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.50000000 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6cffcd8e89f61274005c45d7.png", "id": "gf_6cffcd8e89f61274005c45d7", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_bdca6ed68d6c1903e4f71e5d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_6cffcd8e89f61274005c45d7.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6d010a988d6ffb52594f3524.png", "id": "gf_6d010a988d6ffb52594f3524", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_46a16c010789c0fc4b4a2cf9", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_6d010a988d6ffb52594f3524.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_6d15fba904b5dc1207fd2fa4.png", "id": "gf_6d15fba904b5dc1207fd2fa4", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_2277b4e004089bd274d5e848", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_6d15fba904b5dc1207fd2fa4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_6dc3e3ba7022e9a283b6b31f.png", "id": "gf_6dc3e3ba7022e9a283b6b31f", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_caadd7a05e258c21069e8819", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_6dc3e3ba7022e9a283b6b31f.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6dd123102785b939aa7db89c.png", "id": "gf_6dd123102785b939aa7db89c", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f7eed6947b6e0141b9b200b5", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_6dd123102785b939aa7db89c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6dd97b11b9984142297caadf.png", "id": "gf_6dd97b11b9984142297caadf", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_105953276bb094df0ee6826b", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_6dd97b11b9984142297caadf.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_6de930da411e4b19186b7490.png", "id": "gf_6de930da411e4b19186b7490", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_72e41a75f4834649a7e5554a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_6de930da411e4b19186b7490.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_6e574cc195782c42790db592.png", "id": "gf_6e574cc195782c42790db592", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_dd7a99b6444ffe6d00880f7c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_6e574cc195782c42790db592.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_6e9aa9f083a1823a3805d8a9.png", "id": "gf_6e9aa9f083a1823a3805d8a9", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_0f0e80e66d9b2eb7991179be", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_6e9aa9f083a1823a3805d8a9.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_6ef77f47ea55047dca16ee34.png", "id": "gf_6ef77f47ea55047dca16ee34", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6830c8ec8cc34e6febc09293", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_6ef77f47ea55047dca16ee34.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_6f4f7b24c0115b43d652ac00.png", "id": "gf_6f4f7b24c0115b43d652ac00", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f07ce9ae7e93c72cb01e5b43", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_6f4f7b24c0115b43d652ac00.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_6f675936ec3d85a2937cfa75.png", "id": "gf_6f675936ec3d85a2937cfa75", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_6254f21154c75322590c2d4b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_6f675936ec3d85a2937cfa75.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_6f8d68c71541bea2a15fb828.png", "id": "gf_6f8d68c71541bea2a15fb828", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_59d4de42e4e95641c527cdba", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_6f8d68c71541bea2a15fb828.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_6fd49e6db31485c410d72a29.png", "id": "gf_6fd49e6db31485c410d72a29", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1bf1c9c99881abd36351b5ba", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_6fd49e6db31485c410d72a29.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_6fd7ea4abf2e229f728077d6.png", "id": "gf_6fd7ea4abf2e229f728077d6", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_66da04b77221a4ff4de30dac", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_6fd7ea4abf2e229f728077d6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_6ffd217c5749f8e30e72020c.png", "id": "gf_6ffd217c5749f8e30e72020c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9a6736705ed1fbdf58650ab5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_6ffd217c5749f8e30e72020c.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_709507c926f66567610c5d94.png", "id": "gf_709507c926f66567610c5d94", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_3251c35290678f1ce56d51de", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_709507c926f66567610c5d94.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_70b8ce632b3a8ba47258f1c0.png", "id": "gf_70b8ce632b3a8ba47258f1c0", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_0bbf32b0263590e39e2202fd", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_70b8ce632b3a8ba47258f1c0.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_71918682707c27f28ac9066a.png", "id": "gf_71918682707c27f28ac9066a", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0e1c6a0d7a8d3c7dd2004918", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_71918682707c27f28ac9066a.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_71ea4ac8f72b5f6f9e186dbf.png", "id": "gf_71ea4ac8f72b5f6f9e186dbf", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_cf53a5aba8718d4d55c283c5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_71ea4ac8f72b5f6f9e186dbf.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The loaded lever is released under gravity about its fixed hinge, with a passive stop on the left. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "lever_release_under_gravity"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_7233d35b0c71244eb6862a5f.png", "id": "gf_7233d35b0c71244eb6862a5f", "observation_time_s": 0.1, "original_partition": "test", "pair_id": "pair_319cbc4fe16acf8846a8cacc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_7233d35b0c71244eb6862a5f.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_729d231a838ab8d1fb7981cc.png", "id": "gf_729d231a838ab8d1fb7981cc", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_58095a2fee73b270d372067a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_729d231a838ab8d1fb7981cc.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_7442dd54736be93c741ba955.png", "id": "gf_7442dd54736be93c741ba955", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_45279472d926dffeca8d4c2b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_7442dd54736be93c741ba955.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_745be88b1c9a2982f4065dc7.png", "id": "gf_745be88b1c9a2982f4065dc7", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4afdbb846509cf9ceeeef72e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_745be88b1c9a2982f4065dc7.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_746a0462e3a41b3092736d64.png", "id": "gf_746a0462e3a41b3092736d64", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3d97f39d687d9a9955ad2c25", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_746a0462e3a41b3092736d64.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_74ff1d9dc89a22d1b9f32d3e.png", "id": "gf_74ff1d9dc89a22d1b9f32d3e", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_987e14c02aef173d4aef331f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_74ff1d9dc89a22d1b9f32d3e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_7517ef03b30d8f5bba103edd.png", "id": "gf_7517ef03b30d8f5bba103edd", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_ee67dfc992659817e6447506", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_7517ef03b30d8f5bba103edd.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_7529a6837221b740ccf2d341.png", "id": "gf_7529a6837221b740ccf2d341", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_bbfb094b40ba45ce32a5f458", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_7529a6837221b740ccf2d341.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["downhill", "uphill"], "category": "contact", "condition": "B", "construction_subset": "parameter_conditioned_single_first_frame", "first_frame": "first_frames/gf_7583fca8134fff964cadec3b.png", "id": "gf_7583fca8134fff964cadec3b", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_6b221364d2fec9e9a0e26bc1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "uphill", "reference_video": "references/gf_7583fca8134fff964cadec3b.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the subsequent motion under gravity, the permanently attached preloaded ideal Hooke spring, passive friction, and the ideal massless inextensible rope. There are no hands, active motors or external pushes. Keep the scene and camera unchanged; use realistic physics and real-time speed. Use the shared physical conditions provided with this apparatus. Do not infer the spring rest length or hidden mass/inertia from color.", "task": "A_initial_slope_direction_at_0_2_s"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_7842a3a2ead19bf6a52dd2f6.png", "id": "gf_7842a3a2ead19bf6a52dd2f6", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_e574face36580e4065d84685", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_7842a3a2ead19bf6a52dd2f6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_78b131703d1f06aec50d5594.png", "id": "gf_78b131703d1f06aec50d5594", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_8f0e5d56a9aafee95bc4678a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_78b131703d1f06aec50d5594.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_7943415ef2f35d0c10d86004.png", "id": "gf_7943415ef2f35d0c10d86004", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_210be531d87b258e0e2a97ab", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_7943415ef2f35d0c10d86004.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_7974114de8ea8401cd3aed9e.png", "id": "gf_7974114de8ea8401cd3aed9e", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_ef4117065a17f0737a2eb6d6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_7974114de8ea8401cd3aed9e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_79c86310ef5469b8bed3f1b0.png", "id": "gf_79c86310ef5469b8bed3f1b0", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_30f65139552de6b6bd392a68", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_79c86310ef5469b8bed3f1b0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_79c95808844a202cb40c3edb.png", "id": "gf_79c95808844a202cb40c3edb", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_77a42f8536ddf2dd4a7967db", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_79c95808844a202cb40c3edb.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_79d9b5e065cb1f5eced70e1d.png", "id": "gf_79d9b5e065cb1f5eced70e1d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e2eb8ac858f9476dad7f39a9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_79d9b5e065cb1f5eced70e1d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_79fb2f654a979e1736dac931.png", "id": "gf_79fb2f654a979e1736dac931", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_97352fc81201868baaba8b24", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_79fb2f654a979e1736dac931.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_7a23bf7d3260861b0d94504d.png", "id": "gf_7a23bf7d3260861b0d94504d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9418e50cb74246807e1496c9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_7a23bf7d3260861b0d94504d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_7adacca3cb9c5345c9cfb648.png", "id": "gf_7adacca3cb9c5345c9cfb648", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_62974d6f0699b3745acbf4e8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_7adacca3cb9c5345c9cfb648.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_7b2acdf92001d5dff547e06f.png", "id": "gf_7b2acdf92001d5dff547e06f", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_11f2bca0075ff23ebbe29238", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_7b2acdf92001d5dff547e06f.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_7bfce86bee31fca157e8a7e8.png", "id": "gf_7bfce86bee31fca157e8a7e8", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_74aa905678c482209b06a473", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_7bfce86bee31fca157e8a7e8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_7c00a4b05cf5f84e7d704498.png", "id": "gf_7c00a4b05cf5f84e7d704498", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_9219997d0f2b5163298cb901", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_7c00a4b05cf5f84e7d704498.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_7c17c060802c009a08b0cb4f.png", "id": "gf_7c17c060802c009a08b0cb4f", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_94b9225c7ae2f36faae84cfc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_7c17c060802c009a08b0cb4f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_7c76bfeaeb141d5b0e4a6b23.png", "id": "gf_7c76bfeaeb141d5b0e4a6b23", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_0f0e80e66d9b2eb7991179be", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_7c76bfeaeb141d5b0e4a6b23.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_7c770e5a5b7f419df85e86dd.png", "id": "gf_7c770e5a5b7f419df85e86dd", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_970efb2afbf7c9b568705869", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_7c770e5a5b7f419df85e86dd.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_7c91a59f96e4a86ff9988ade.png", "id": "gf_7c91a59f96e4a86ff9988ade", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f18b180d7e23b27401aa46a7", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_7c91a59f96e4a86ff9988ade.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_7c97e32cb48e45fae945b5d4.png", "id": "gf_7c97e32cb48e45fae945b5d4", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f7db08a25e3764bc98a9023d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_7c97e32cb48e45fae945b5d4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_7ccb984566b9e1da52a94322.png", "id": "gf_7ccb984566b9e1da52a94322", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_bbfb3497f546e1d14b914431", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_7ccb984566b9e1da52a94322.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_7d155fe11c14faee875473a3.png", "id": "gf_7d155fe11c14faee875473a3", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_8ace1f97f054209cf89025ca", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_7d155fe11c14faee875473a3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_7d32903e17277aeef6285947.png", "id": "gf_7d32903e17277aeef6285947", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_0b42984a9ea010f69a5e282f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_7d32903e17277aeef6285947.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_7d806e6ee2d9d45896b28d4d.png", "id": "gf_7d806e6ee2d9d45896b28d4d", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_17c0b7787a22a0dd78c0aa97", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_7d806e6ee2d9d45896b28d4d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_7db51268d8f53c0e24f53e37.png", "id": "gf_7db51268d8f53c0e24f53e37", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_526e23280c2a41b14e0bcaef", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_7db51268d8f53c0e24f53e37.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_7def779093fbc4df356c948a.png", "id": "gf_7def779093fbc4df356c948a", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_868eaa20ff30d7bc4a1e8186", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_7def779093fbc4df356c948a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_7e5e62a13683e0780068f73c.png", "id": "gf_7e5e62a13683e0780068f73c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e400146688016df7a7724be3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_7e5e62a13683e0780068f73c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_7e755e16f40e20951c612f14.png", "id": "gf_7e755e16f40e20951c612f14", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_745b656468b460f2bfbc7dc3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_7e755e16f40e20951c612f14.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_7e8bae6a18cfa270edf829b2.png", "id": "gf_7e8bae6a18cfa270edf829b2", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_249420e3a77a9f422da43c15", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_7e8bae6a18cfa270edf829b2.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_7e99f2573e8f9ffca5615f92.png", "id": "gf_7e99f2573e8f9ffca5615f92", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_070b0caedf959b064953a1eb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_7e99f2573e8f9ffca5615f92.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_7ee56f2d7e974fed674fae19.png", "id": "gf_7ee56f2d7e974fed674fae19", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_e6d3b31e31447e9aa1157b3d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_7ee56f2d7e974fed674fae19.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_7f45bba58e849378d9440124.png", "id": "gf_7f45bba58e849378d9440124", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_23ac285542c1d5fe1d7c34c1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_7f45bba58e849378d9440124.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_7f7793da4d090bd227c1f50e.png", "id": "gf_7f7793da4d090bd227c1f50e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_595391df2f4c6eef7114b219", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_7f7793da4d090bd227c1f50e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_7fd2a8b57c74d507b8ba57b3.png", "id": "gf_7fd2a8b57c74d507b8ba57b3", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_93db11dc8b561fb4403c2cce", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_7fd2a8b57c74d507b8ba57b3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_8049287b736acaa041fd4ce3.png", "id": "gf_8049287b736acaa041fd4ce3", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_0a8f057771337e4d10c45d2c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_8049287b736acaa041fd4ce3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_8064b98abbb95f2e0e5ab0bc.png", "id": "gf_8064b98abbb95f2e0e5ab0bc", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_caadd7a05e258c21069e8819", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_8064b98abbb95f2e0e5ab0bc.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_80b80bb6dfee9fff56bc0e68.png", "id": "gf_80b80bb6dfee9fff56bc0e68", "observation_time_s": 0.1, "original_partition": "train", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_80b80bb6dfee9fff56bc0e68.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_8107f45c6598b636e92b0369.png", "id": "gf_8107f45c6598b636e92b0369", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_1153bd47b51f9f89273163eb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_8107f45c6598b636e92b0369.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. Two uniform solid rods form a double pendulum with ideal frictionless planar hinges. Upper/lower rod lengths are [0.7, 0.6] m, masses [1.225, 1.05] kg, rectangular cross-section 0.05 by 0.07 m. Adjacent rods do not collide at their ideal joint.", "task": "upper_rod_horizontal_direction_at_0_2_s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8116647e48bf013682deff85.png", "id": "gf_8116647e48bf013682deff85", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4a65d7e865e010eda2a58bf5", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_8116647e48bf013682deff85.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8124ed3fc4d760343bc634f6.png", "id": "gf_8124ed3fc4d760343bc634f6", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_280eb30f53b1d542f268f4b1", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_8124ed3fc4d760343bc634f6.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_81dbc64826f2b81acf84ebf4.png", "id": "gf_81dbc64826f2b81acf84ebf4", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e9d34621eb6008c557396aa7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_81dbc64826f2b81acf84ebf4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_81f9c5fac92054ad452192d8.png", "id": "gf_81f9c5fac92054ad452192d8", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_a638dbe4fe2e966839875374", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_81f9c5fac92054ad452192d8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_82273ce438dfb890599f9c2a.png", "id": "gf_82273ce438dfb890599f9c2a", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d268efef23ecb97d6696d17c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_82273ce438dfb890599f9c2a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_829a416082b4f5ed11532b29.png", "id": "gf_829a416082b4f5ed11532b29", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_02f99d66f235944b4897716e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_829a416082b4f5ed11532b29.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_82d6534bf6c5bfd00ff62555.png", "id": "gf_82d6534bf6c5bfd00ff62555", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_9be8ed642170c7b57091f28d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_82d6534bf6c5bfd00ff62555.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_82f4377a35662219da7fb331.png", "id": "gf_82f4377a35662219da7fb331", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": "pair_3231079df4c761465d873336", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_82f4377a35662219da7fb331.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_833653224041ecc7ca2a5f3a.png", "id": "gf_833653224041ecc7ca2a5f3a", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_833653224041ecc7ca2a5f3a.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_837e8ec9a2f39f4f6b81ea51.png", "id": "gf_837e8ec9a2f39f4f6b81ea51", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f6f38eec801d8c01c2f1d7a1", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_837e8ec9a2f39f4f6b81ea51.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_83f38e72f61c73c3330f9e03.png", "id": "gf_83f38e72f61c73c3330f9e03", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_aaac4322add966991a4593a7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_83f38e72f61c73c3330f9e03.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_840f4155ffd0dc37132f0236.png", "id": "gf_840f4155ffd0dc37132f0236", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_81939d88f2816ae360e6204c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_840f4155ffd0dc37132f0236.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_8417f8fd80e3d598a67b78c0.png", "id": "gf_8417f8fd80e3d598a67b78c0", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_1bc4ef6254203d6df211929c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_8417f8fd80e3d598a67b78c0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_842c590d0f03fc051a562806.png", "id": "gf_842c590d0f03fc051a562806", "observation_time_s": 0.1, "original_partition": "test", "pair_id": "pair_319cbc4fe16acf8846a8cacc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_842c590d0f03fc051a562806.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_8449fe7639abff54c2f30cc4.png", "id": "gf_8449fe7639abff54c2f30cc4", "observation_time_s": 0.1, "original_partition": "test", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_8449fe7639abff54c2f30cc4.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_8476690df4330eebf36ef073.png", "id": "gf_8476690df4330eebf36ef073", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_eed21725c153bb7ad2a0d326", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_8476690df4330eebf36ef073.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_8519b760a99948846c43ec21.png", "id": "gf_8519b760a99948846c43ec21", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_a96bdecb69800f44b576606c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_8519b760a99948846c43ec21.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. Two uniform solid rods form a double pendulum with ideal frictionless planar hinges. Upper/lower rod lengths are [0.6, 0.7] m, masses [0.8775000000000001, 1.02375] kg, rectangular cross-section 0.045 by 0.065 m. Adjacent rods do not collide at their ideal joint.", "task": "upper_rod_horizontal_direction_at_0_2_s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8519d44f007d318c29511d07.png", "id": "gf_8519d44f007d318c29511d07", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_9cb9a27305f8d84bbac172f1", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_8519d44f007d318c29511d07.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8521e39e8d08c763cfde0a6e.png", "id": "gf_8521e39e8d08c763cfde0a6e", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_72e41a75f4834649a7e5554a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_8521e39e8d08c763cfde0a6e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_858c44262a75dd752eb7e74c.png", "id": "gf_858c44262a75dd752eb7e74c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4d7a88eeeb9c03aa9adb8243", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_858c44262a75dd752eb7e74c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_859394e32a8578843dc95d22.png", "id": "gf_859394e32a8578843dc95d22", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_86c0b097be72c51eefb23a7b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_859394e32a8578843dc95d22.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_85cd24422a4f9d3841d209a3.png", "id": "gf_85cd24422a4f9d3841d209a3", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_7c9350e91152fdb379c43423", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_85cd24422a4f9d3841d209a3.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_865f0e605c77edf9e50b8644.png", "id": "gf_865f0e605c77edf9e50b8644", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a7555afac0062ec0e41b9151", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_865f0e605c77edf9e50b8644.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_869d837f9cb8b1c934083338.png", "id": "gf_869d837f9cb8b1c934083338", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_0b42984a9ea010f69a5e282f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_869d837f9cb8b1c934083338.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_87172b2fefa859c75a7c15de.png", "id": "gf_87172b2fefa859c75a7c15de", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_2a3d1993f0e5b1ac16a4ba3d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_87172b2fefa859c75a7c15de.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. An orange finite spherical bob of radius 0.11 m and mass 1.1 kg is connected to an ideal frictionless planar pivot by a massless rigid link. Pivot-to-centre distance is 1.05 m. The blue free uniform box has width/depth/height [0.26, 0.26, 1.0] m and mass 2.2 kg, resting on a horizontal floor. Contact friction and restitution are zero. The box is free to move when contacted.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_885f94cbb314ddd60704d710.png", "id": "gf_885f94cbb314ddd60704d710", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a07a42da0c7eecb30d7e6086", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_885f94cbb314ddd60704d710.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_88a0120a614ad60b6dc77e93.png", "id": "gf_88a0120a614ad60b6dc77e93", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_7e0c77b2913ec2c5dda5fe9c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_88a0120a614ad60b6dc77e93.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_88da5ed888b34fbfd244618d.png", "id": "gf_88da5ed888b34fbfd244618d", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_50d763a55900962d3e9d5549", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_88da5ed888b34fbfd244618d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_88f509bff866e3d92fe16404.png", "id": "gf_88f509bff866e3d92fe16404", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_dc227bced8fde69728ac172d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_88f509bff866e3d92fe16404.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_88fb6148adad156a4fa6a7da.png", "id": "gf_88fb6148adad156a4fa6a7da", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_59b885ed9589ae154d17f6ab", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_88fb6148adad156a4fa6a7da.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_893dca34ea042c66a84c2a90.png", "id": "gf_893dca34ea042c66a84c2a90", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_6c9646171054fe22d3d2cce8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_893dca34ea042c66a84c2a90.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_899a1801148696c4917b78b2.png", "id": "gf_899a1801148696c4917b78b2", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6830c8ec8cc34e6febc09293", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_899a1801148696c4917b78b2.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_899f4aa541a561e289c475fe.png", "id": "gf_899f4aa541a561e289c475fe", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9130541fd8d7dc1e54fa8962", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_899f4aa541a561e289c475fe.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_89c8d0585d38c7c9234ba1f2.png", "id": "gf_89c8d0585d38c7c9234ba1f2", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_029c8de677e833104ad0f011", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_89c8d0585d38c7c9234ba1f2.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8a1b2dd0ae1f6b82bd85fcc4.png", "id": "gf_8a1b2dd0ae1f6b82bd85fcc4", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_0f4636f762d3dd7c600ad723", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_8a1b2dd0ae1f6b82bd85fcc4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_8a2c9931f1e24bf6f121284a.png", "id": "gf_8a2c9931f1e24bf6f121284a", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_046fe40f677796f4895a30ee", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_8a2c9931f1e24bf6f121284a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_8a9d1d67ee15c25c967f2ffd.png", "id": "gf_8a9d1d67ee15c25c967f2ffd", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5f41b2a08f1d59c74a7132bb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_8a9d1d67ee15c25c967f2ffd.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8aab00f96a1f3b42702cd0eb.png", "id": "gf_8aab00f96a1f3b42702cd0eb", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_d9c8a098e490a47366fac6ad", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_8aab00f96a1f3b42702cd0eb.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_8ae064e06fa6043d05be2ab2.png", "id": "gf_8ae064e06fa6043d05be2ab2", "observation_time_s": 2.466666666666667, "original_partition": "validation", "pair_id": "pair_f2e993c4059e7b84dff3daf4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_8ae064e06fa6043d05be2ab2.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_8b45242cef2cca0dac497fca.png", "id": "gf_8b45242cef2cca0dac497fca", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_f5cfa81b95c71f26d735b670", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_8b45242cef2cca0dac497fca.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_8b4c9a3cc8acf9d78435e139.png", "id": "gf_8b4c9a3cc8acf9d78435e139", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6cf11f78acc3b69487869d36", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_8b4c9a3cc8acf9d78435e139.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_8b72c9fa99d8a01cb0197f8b.png", "id": "gf_8b72c9fa99d8a01cb0197f8b", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_7ded406d6171a02474971fd6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_8b72c9fa99d8a01cb0197f8b.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The loaded lever is released under gravity about its fixed hinge, with a passive stop on the left. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "lever_release_under_gravity"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_8b97601bc01061a291d05718.png", "id": "gf_8b97601bc01061a291d05718", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_ccddb58204416613249c24f5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_8b97601bc01061a291d05718.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_8b9a375dfa66632aa43dbd3e.png", "id": "gf_8b9a375dfa66632aa43dbd3e", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_210be531d87b258e0e2a97ab", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_8b9a375dfa66632aa43dbd3e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_8b9c6b39cc8004b31d121e7a.png", "id": "gf_8b9c6b39cc8004b31d121e7a", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f7ae3f60b55da039db4675d1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_8b9c6b39cc8004b31d121e7a.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["downhill", "uphill"], "category": "contact", "condition": "B", "construction_subset": "parameter_conditioned_single_first_frame", "first_frame": "first_frames/gf_8c4a38ab7718905c8889d410.png", "id": "gf_8c4a38ab7718905c8889d410", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_32807487586499cc63f93fbf", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "downhill", "reference_video": "references/gf_8c4a38ab7718905c8889d410.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the subsequent motion under gravity, the permanently attached preloaded ideal Hooke spring, passive friction, and the ideal massless inextensible rope. There are no hands, active motors or external pushes. Keep the scene and camera unchanged; use realistic physics and real-time speed. Use the shared physical conditions provided with this apparatus. Do not infer the spring rest length or hidden mass/inertia from color.", "task": "A_initial_slope_direction_at_0_2_s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_8c5a26f7dc569aea2e74ff13.png", "id": "gf_8c5a26f7dc569aea2e74ff13", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_ac252164b7ce0d6e99e41a2a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_8c5a26f7dc569aea2e74ff13.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8cc2da5614582157c728e0f2.png", "id": "gf_8cc2da5614582157c728e0f2", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f6b7320ef6c2250dc18e7019", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_8cc2da5614582157c728e0f2.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_8d47ffc3ed451efe633ed5e9.png", "id": "gf_8d47ffc3ed451efe633ed5e9", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_9849f7fe7062534a1dcb7516", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_8d47ffc3ed451efe633ed5e9.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8dcaba0e5a2c6eae6c2e7da5.png", "id": "gf_8dcaba0e5a2c6eae6c2e7da5", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_8c6440530e8094c82e3993d9", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_8dcaba0e5a2c6eae6c2e7da5.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_8e3efbe0c55ee71a43664f55.png", "id": "gf_8e3efbe0c55ee71a43664f55", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_9849f7fe7062534a1dcb7516", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_8e3efbe0c55ee71a43664f55.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8e515cf5f9e1787c954ef7b2.png", "id": "gf_8e515cf5f9e1787c954ef7b2", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_fea9e6766ec150bce165897e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_8e515cf5f9e1787c954ef7b2.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_8e571bba449e20145a549e22.png", "id": "gf_8e571bba449e20145a549e22", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_96fa0511d9cf7f517b40706e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_8e571bba449e20145a549e22.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_8e87fc1be316fa008eb5ae29.png", "id": "gf_8e87fc1be316fa008eb5ae29", "observation_time_s": 0.1, "original_partition": "test", "pair_id": "pair_abf37cc561a2bad47caab9d0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_8e87fc1be316fa008eb5ae29.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_8f090c61c88323ec0b5b2065.png", "id": "gf_8f090c61c88323ec0b5b2065", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_319f44cb154ad0783b50a82c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_8f090c61c88323ec0b5b2065.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_8f1994b8a3123067c0f371d5.png", "id": "gf_8f1994b8a3123067c0f371d5", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_d39fd0a15e6ec64102e99ac7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_8f1994b8a3123067c0f371d5.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8fa173dbd4c8c7615ed87981.png", "id": "gf_8fa173dbd4c8c7615ed87981", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_0f5cf899e72ec49a3abe5980", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_8fa173dbd4c8c7615ed87981.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_8fcb59143c7093e5a1e8795b.png", "id": "gf_8fcb59143c7093e5a1e8795b", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_66da04b77221a4ff4de30dac", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_8fcb59143c7093e5a1e8795b.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_8fd74933943488edf07baddc.png", "id": "gf_8fd74933943488edf07baddc", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_62974d6f0699b3745acbf4e8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_8fd74933943488edf07baddc.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["left", "right"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_8ff791363ed4f26110965bf8.png", "id": "gf_8ff791363ed4f26110965bf8", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_78b3c8138cb207a6b8ff975a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_8ff791363ed4f26110965bf8.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the motion under gravity, passive friction and stored spring energy, with no active drive or external push. The visible guides represent ideal translation constraints. Springs transmit force through the stated native finite-piston/stop mechanism; an unbonded block can separate. Use the common physical constants. Keep the camera fixed and use real-time speed.", "task": "base_direction_at_0_2_s"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_9020c50921f41bd5cd4835ec.png", "id": "gf_9020c50921f41bd5cd4835ec", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_5396b8cc4cf330ebc6fc9a87", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_9020c50921f41bd5cd4835ec.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_9026469f50b2a1aabe6fac54.png", "id": "gf_9026469f50b2a1aabe6fac54", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_3db60b9e15890e697b43ec75", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_9026469f50b2a1aabe6fac54.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. An orange finite spherical bob of radius 0.13 m and mass 1.2 kg is connected to an ideal frictionless planar pivot by a massless rigid link. Pivot-to-centre distance is 1.1 m. The blue free uniform box has width/depth/height [0.28, 0.28, 1.05] m and mass 2.4 kg, resting on a horizontal floor. Contact friction and restitution are zero. The box is free to move when contacted.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_9078dc8ee8b07ad74983d9a9.png", "id": "gf_9078dc8ee8b07ad74983d9a9", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_d64e5bcc53c00dd8583c81c7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_9078dc8ee8b07ad74983d9a9.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_90866e307ca6992e11c09bc9.png", "id": "gf_90866e307ca6992e11c09bc9", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_30f65139552de6b6bd392a68", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_90866e307ca6992e11c09bc9.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_90a485398643a2b8954424ca.png", "id": "gf_90a485398643a2b8954424ca", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_2a4577f04e596e7a4f77a00e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_90a485398643a2b8954424ca.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_90a9e8f88d7267e6d8a28e28.png", "id": "gf_90a9e8f88d7267e6d8a28e28", "observation_time_s": 0.5333333333333333, "original_partition": "development", "pair_id": "pair_841651fe85b0df7cac6303a8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5666666666666667, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_90a9e8f88d7267e6d8a28e28.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.0 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.53333333 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_90afbf2592f10aabdd3e964b.png", "id": "gf_90afbf2592f10aabdd3e964b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_605cbe012f750298a82a3a56", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_90afbf2592f10aabdd3e964b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_90d7cab523ea6dc58408296a.png", "id": "gf_90d7cab523ea6dc58408296a", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_ec64490dbfe0e9d6423e5e26", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_90d7cab523ea6dc58408296a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_9101dd178a70fd811570e644.png", "id": "gf_9101dd178a70fd811570e644", "observation_time_s": 0.4, "original_partition": "development", "pair_id": "pair_74ba8e42d35947e2d7c08478", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_left", "reference_video": "references/gf_9101dd178a70fd811570e644.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The wheel with its visibly fixed eccentric weight is released under gravity on a horizontal surface. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "eccentric_wheel_initial_roll_direction"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_91157d6c2d0f76ed39ee765f.png", "id": "gf_91157d6c2d0f76ed39ee765f", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_5d60b0797c09c272517ec460", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_91157d6c2d0f76ed39ee765f.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_912a02bb61cae1335dfef1d2.png", "id": "gf_912a02bb61cae1335dfef1d2", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_79db4aaab819a6aee1338498", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_912a02bb61cae1335dfef1d2.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_913513401609faa3b3973433.png", "id": "gf_913513401609faa3b3973433", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_8aff926b7b891d2373f9ec1b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_913513401609faa3b3973433.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_914b1e255b7031ae0c202c9e.png", "id": "gf_914b1e255b7031ae0c202c9e", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_cfb854282e38a7888947dac4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_914b1e255b7031ae0c202c9e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_916185a33bff2cfa5fd76ee0.png", "id": "gf_916185a33bff2cfa5fd76ee0", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_cf3e8340fd1fd3bf6dd4374d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_916185a33bff2cfa5fd76ee0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_91d7fb696e7e8c660c0b19a3.png", "id": "gf_91d7fb696e7e8c660c0b19a3", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_622db1e4acc44b4eeb8323fe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_91d7fb696e7e8c660c0b19a3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_92247176dc8b13060716809c.png", "id": "gf_92247176dc8b13060716809c", "observation_time_s": 0.5, "original_partition": "development", "pair_id": "pair_8c6b8d65bcf2ed23a888786d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5333333333333333, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_92247176dc8b13060716809c.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.8 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.50000000 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_9276727d75a73cdc295b0682.png", "id": "gf_9276727d75a73cdc295b0682", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_a67ebba15d5c6c6bcf62ee40", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "retained", "reference_video": "references/gf_9276727d75a73cdc295b0682.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the motion under gravity, passive friction and stored spring energy, with no active drive or external push. The visible guides represent ideal translation constraints. Springs transmit force through the stated native finite-piston/stop mechanism; an unbonded block can separate. Use the common physical constants. Keep the camera fixed and use real-time speed.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_92bf868b59caaca8e44fa3c6.png", "id": "gf_92bf868b59caaca8e44fa3c6", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_df80932b0b8cf6d0fdc5f14d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_92bf868b59caaca8e44fa3c6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_92ee030c20c2c8042efc4217.png", "id": "gf_92ee030c20c2c8042efc4217", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_e574face36580e4065d84685", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_92ee030c20c2c8042efc4217.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_9318c6cc0daf67568ad8ea5d.png", "id": "gf_9318c6cc0daf67568ad8ea5d", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_c2be07924fbb77c0fe6f6b47", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_9318c6cc0daf67568ad8ea5d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_9346145cf2d5bf9c7e307b1d.png", "id": "gf_9346145cf2d5bf9c7e307b1d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9a6736705ed1fbdf58650ab5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_9346145cf2d5bf9c7e307b1d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_93ae1d8e832675611e874493.png", "id": "gf_93ae1d8e832675611e874493", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_e49a643616a44d11ff94e84e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_93ae1d8e832675611e874493.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_943e33e87f09e91789357a9b.png", "id": "gf_943e33e87f09e91789357a9b", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_86e98ae29a16558b463dca68", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_943e33e87f09e91789357a9b.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_94407b1cf1dfbe57b51de398.png", "id": "gf_94407b1cf1dfbe57b51de398", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_9a4553aa5e36d83fb4ab2901", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_94407b1cf1dfbe57b51de398.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_944b633786b1525fe0a3fbda.png", "id": "gf_944b633786b1525fe0a3fbda", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d856c63684ff44858dac4e67", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_944b633786b1525fe0a3fbda.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_94642bf92a5eebf268ddbb95.png", "id": "gf_94642bf92a5eebf268ddbb95", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_e1e3af74e164bce018719182", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_94642bf92a5eebf268ddbb95.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_94aa66de99c67571b9089e87.png", "id": "gf_94aa66de99c67571b9089e87", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_52e9eacebebf578dc73722d0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_94aa66de99c67571b9089e87.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_94b13a210f1229775cb0d267.png", "id": "gf_94b13a210f1229775cb0d267", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_053237499e9db0685f0b309d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_94b13a210f1229775cb0d267.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_94f34aa156e80884467deeee.png", "id": "gf_94f34aa156e80884467deeee", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_17b8704533f004a2585330f0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_94f34aa156e80884467deeee.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_9510832de6d7bb1ff257dfa2.png", "id": "gf_9510832de6d7bb1ff257dfa2", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_81939d88f2816ae360e6204c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_9510832de6d7bb1ff257dfa2.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_9529b351e87a2a057727aea2.png", "id": "gf_9529b351e87a2a057727aea2", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_93e1f6214b1baf1ad2cb6489", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_9529b351e87a2a057727aea2.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_953af0447445c2644bcb3390.png", "id": "gf_953af0447445c2644bcb3390", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_0b41449471f2c0b12758b295", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_953af0447445c2644bcb3390.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_95447cb61fec2e0c3c46f887.png", "id": "gf_95447cb61fec2e0c3c46f887", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e9f299bf36881ddf1e9d23da", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_95447cb61fec2e0c3c46f887.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_956809abb0f6d7ac2327ec27.png", "id": "gf_956809abb0f6d7ac2327ec27", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5c469b4f04c075476cedf39d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_956809abb0f6d7ac2327ec27.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_95bc9beb65a89a05554d93ee.png", "id": "gf_95bc9beb65a89a05554d93ee", "observation_time_s": 0.1, "original_partition": "train", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_95bc9beb65a89a05554d93ee.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_95edfcf974f479ee97144076.png", "id": "gf_95edfcf974f479ee97144076", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_eaaf7b189c9c4c075e8fffce", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_95edfcf974f479ee97144076.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_96032cea0440bdaa95a525ea.png", "id": "gf_96032cea0440bdaa95a525ea", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_85d2fecaeffcdaa16b304b7d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_96032cea0440bdaa95a525ea.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_96150e984b9a8ca19b55a7f5.png", "id": "gf_96150e984b9a8ca19b55a7f5", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f8fe068e4c5912994de22865", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_96150e984b9a8ca19b55a7f5.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_963cd9ee6b8e13be0ea4d93e.png", "id": "gf_963cd9ee6b8e13be0ea4d93e", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_8073e6dbfafb1827e0d46b71", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_963cd9ee6b8e13be0ea4d93e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_96885b2320bc88b6cd1f6ae8.png", "id": "gf_96885b2320bc88b6cd1f6ae8", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_6baf6b89cda7da72363c993c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_96885b2320bc88b6cd1f6ae8.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_96946fa909daeb74d86b26e2.png", "id": "gf_96946fa909daeb74d86b26e2", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_8534010b577dcc3a437ba1c8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_96946fa909daeb74d86b26e2.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_96c5815e4be9757e0842b294.png", "id": "gf_96c5815e4be9757e0842b294", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_2966fdb729f63c84594d0193", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_96c5815e4be9757e0842b294.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_96fd6bb7583b1bbbd50ee1af.png", "id": "gf_96fd6bb7583b1bbbd50ee1af", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_04a81fca631a3ecaddf95bff", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_96fd6bb7583b1bbbd50ee1af.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_97051516d13fd06ad0804a4b.png", "id": "gf_97051516d13fd06ad0804a4b", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_ceca2d8aef721d1a9d520df7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_97051516d13fd06ad0804a4b.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_97453dffc2d58ca966364e98.png", "id": "gf_97453dffc2d58ca966364e98", "observation_time_s": 0.5333333333333333, "original_partition": "development", "pair_id": "pair_fed555f2d5e388d12c0b6001", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5666666666666667, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_97453dffc2d58ca966364e98.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.2 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.53333333 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_975eb09e51c6e60f9402d805.png", "id": "gf_975eb09e51c6e60f9402d805", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_975eb09e51c6e60f9402d805.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_977ab498e3dcdd0b7b90d85a.png", "id": "gf_977ab498e3dcdd0b7b90d85a", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f743b9be5c7d05f55a9ccb6d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_977ab498e3dcdd0b7b90d85a.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_9819c4261781550812c66cab.png", "id": "gf_9819c4261781550812c66cab", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_0f4636f762d3dd7c600ad723", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_9819c4261781550812c66cab.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_9841c1e88066b7d0e9abe610.png", "id": "gf_9841c1e88066b7d0e9abe610", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d195c7a8e5a25e6724023f60", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_9841c1e88066b7d0e9abe610.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_98fedd47e202098591bfe68d.png", "id": "gf_98fedd47e202098591bfe68d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_7bb0a86e8f5413f97511057f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_98fedd47e202098591bfe68d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "time_countercontrol", "first_frame": "first_frames/gf_997474e2b1aaf029219abaf4.png", "id": "gf_997474e2b1aaf029219abaf4", "observation_time_s": 0.8, "original_partition": "development", "pair_id": "pair_bb30a631c1e97baa55781a83", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.8333333333333334, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_997474e2b1aaf029219abaf4.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.2 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.80000000 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_99c8dbd20f7fb6dba5d58e34.png", "id": "gf_99c8dbd20f7fb6dba5d58e34", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_6db6bfb4225068486840627a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_99c8dbd20f7fb6dba5d58e34.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_9a046d565ba5a59046b5947f.png", "id": "gf_9a046d565ba5a59046b5947f", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_a83afef3c569df008768daf1", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_9a046d565ba5a59046b5947f.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_9a1365b9e7838f3046b1107e.png", "id": "gf_9a1365b9e7838f3046b1107e", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_622db1e4acc44b4eeb8323fe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_9a1365b9e7838f3046b1107e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_9a13939fbd47638b493429c9.png", "id": "gf_9a13939fbd47638b493429c9", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_9a13939fbd47638b493429c9.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_9a2a514a611e7e6c0c865609.png", "id": "gf_9a2a514a611e7e6c0c865609", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_02f99d66f235944b4897716e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_9a2a514a611e7e6c0c865609.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_9a34d25d022c251a9decf494.png", "id": "gf_9a34d25d022c251a9decf494", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_c9860591be9030cdedcfeef8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_9a34d25d022c251a9decf494.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_9ab77183cf55797d96ee442e.png", "id": "gf_9ab77183cf55797d96ee442e", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_4c5a6d356d9e870ee4402c7e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_9ab77183cf55797d96ee442e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_9b49714a729cd8cc80ad8a92.png", "id": "gf_9b49714a729cd8cc80ad8a92", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_bd203e55a22ac214feab4f7d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_9b49714a729cd8cc80ad8a92.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_9b9d9f6a1dc0b58991e53c65.png", "id": "gf_9b9d9f6a1dc0b58991e53c65", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_3275d2ac6a2813b4db716799", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_9b9d9f6a1dc0b58991e53c65.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_9bca4ef83fae70c0f98f0478.png", "id": "gf_9bca4ef83fae70c0f98f0478", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f419f924e657c5b9bab9e519", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_9bca4ef83fae70c0f98f0478.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_9bde29fbddf9a94cdc6ef1ee.png", "id": "gf_9bde29fbddf9a94cdc6ef1ee", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e580760f95ab7e15d43e9ec9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_9bde29fbddf9a94cdc6ef1ee.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_9beb49da4115b523d5df6c48.png", "id": "gf_9beb49da4115b523d5df6c48", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_4bc5c4eafd7d21b8ab2b47c8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_9beb49da4115b523d5df6c48.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_9c06a587aa41e7e776c0d6c2.png", "id": "gf_9c06a587aa41e7e776c0d6c2", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1bf1c9c99881abd36351b5ba", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_9c06a587aa41e7e776c0d6c2.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_9c2501db3aecad53878a18f5.png", "id": "gf_9c2501db3aecad53878a18f5", "observation_time_s": 0.4666666666666667, "original_partition": "development", "pair_id": "pair_4bd1ca5a773b48b5183408ab", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_9c2501db3aecad53878a18f5.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.6 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.46666667 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_9cb7ace43e6cbe7b03aa55eb.png", "id": "gf_9cb7ace43e6cbe7b03aa55eb", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a4b79342b06c85f0d8dfef9f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_9cb7ace43e6cbe7b03aa55eb.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_9cc1f6d4b15975e2d0ae9fbc.png", "id": "gf_9cc1f6d4b15975e2d0ae9fbc", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_69b0ff998c9575b3ed4437ab", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_9cc1f6d4b15975e2d0ae9fbc.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_9d1089983492f63b4f390b6f.png", "id": "gf_9d1089983492f63b4f390b6f", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f91638597d50442c559a91f5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_9d1089983492f63b4f390b6f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_9d1847706d2ced195f2ccbe0.png", "id": "gf_9d1847706d2ced195f2ccbe0", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_8aff926b7b891d2373f9ec1b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_9d1847706d2ced195f2ccbe0.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_9d658f6997aae4b59a08922a.png", "id": "gf_9d658f6997aae4b59a08922a", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_0e305f2ccb2a950c9a65d705", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_9d658f6997aae4b59a08922a.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_9d7cbc8c07c41fcae9c9b9b5.png", "id": "gf_9d7cbc8c07c41fcae9c9b9b5", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b5105275abd88b0d37ec062d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "separated", "reference_video": "references/gf_9d7cbc8c07c41fcae9c9b9b5.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the block on the inclined surface under gravity. It can contact and compress the finite passive spring piston, then may separate; it is not attached to the spring. Continue6seconds under the stated native contact friction and ideal spring/guide conditions. Determine whether block and piston separate after their first contact within the video window, not merely whether the initial frame has a gap. No terminal-rest requirement.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_9e0b0c8363b37ab80fd356ad.png", "id": "gf_9e0b0c8363b37ab80fd356ad", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_8d7ec94c00faf0b7365e8a5b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_9e0b0c8363b37ab80fd356ad.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the finite spherical pendulum under gravity with its massless rigid link and ideal hinge. The blue target is a free uniform box on a frictionless horizontal floor. Continue4seconds. Determine whether the pendulum sphere contacts the target within that observation window. Visible target height determines both target mass and inertia at the common density. No terminal-rest requirement.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_9e60c8e462f9f1e105ebd614.png", "id": "gf_9e60c8e462f9f1e105ebd614", "observation_time_s": 0.5333333333333333, "original_partition": "development", "pair_id": "pair_bd66cd1e19dd0ff1faed8ae1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5666666666666667, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_9e60c8e462f9f1e105ebd614.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.0 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.53333333 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_9eabb591f8dde2472613e742.png", "id": "gf_9eabb591f8dde2472613e742", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_bbfb094b40ba45ce32a5f458", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_9eabb591f8dde2472613e742.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_9ebe02909d9dfd6976905022.png", "id": "gf_9ebe02909d9dfd6976905022", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_74fff546b9d7ea4fbe0d87d9", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_9ebe02909d9dfd6976905022.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_9ec5aea39a146ca89c823e61.png", "id": "gf_9ec5aea39a146ca89c823e61", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_429ea9a82027b3192cbd197a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_9ec5aea39a146ca89c823e61.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_9ed6dcc6022a4637c5a4a32a.png", "id": "gf_9ed6dcc6022a4637c5a4a32a", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d17d9a2cc2f5e2c69ca8a48e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_9ed6dcc6022a4637c5a4a32a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_9eeaf931d924d3284a8d14c0.png", "id": "gf_9eeaf931d924d3284a8d14c0", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_e46a9c1a81b273ea3432016a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_9eeaf931d924d3284a8d14c0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_9f1ce48eb4e66d957fb9772d.png", "id": "gf_9f1ce48eb4e66d957fb9772d", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_c54b2fc8b84b5e468f7a708f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_9f1ce48eb4e66d957fb9772d.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_9f2c23f092ec6d6fa69eea45.png", "id": "gf_9f2c23f092ec6d6fa69eea45", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f79f5fb8be637e1c24987993", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_9f2c23f092ec6d6fa69eea45.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_9f2dfcd901c8ad42c00b0cb3.png", "id": "gf_9f2dfcd901c8ad42c00b0cb3", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_7921971f2a5af2595260ed13", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_9f2dfcd901c8ad42c00b0cb3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_9f74b7d964bca69863169018.png", "id": "gf_9f74b7d964bca69863169018", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_80d44e83b9c586bde9930a0c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_9f74b7d964bca69863169018.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_9f76cbc7f541c39981dc0d65.png", "id": "gf_9f76cbc7f541c39981dc0d65", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_b465e861a1cd9be19c04b49b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_9f76cbc7f541c39981dc0d65.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_9fab9efc5d1afae1c24747c0.png", "id": "gf_9fab9efc5d1afae1c24747c0", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_08b016f37061ebe2d6949c20", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_9fab9efc5d1afae1c24747c0.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_a0126f3a8e9040e3e54752a6.png", "id": "gf_a0126f3a8e9040e3e54752a6", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_2308a2e12efa5def4478f667", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_a0126f3a8e9040e3e54752a6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a032494296be469eee463e67.png", "id": "gf_a032494296be469eee463e67", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_89dd93d125122df95f22fe49", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_a032494296be469eee463e67.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_a18e632a9944f923b225d6c7.png", "id": "gf_a18e632a9944f923b225d6c7", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_63f5aa1928900767a21529e1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_a18e632a9944f923b225d6c7.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_a1b6af6f439086f8a0e76e36.png", "id": "gf_a1b6af6f439086f8a0e76e36", "observation_time_s": 0.1, "original_partition": "test", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_a1b6af6f439086f8a0e76e36.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_a1c46e9e0d4ed9f172411706.png", "id": "gf_a1c46e9e0d4ed9f172411706", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_5bd412ffb40851a75edb55bf", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_a1c46e9e0d4ed9f172411706.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a1c9c3041ffd5109dd9353d0.png", "id": "gf_a1c9c3041ffd5109dd9353d0", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4a65d7e865e010eda2a58bf5", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_a1c9c3041ffd5109dd9353d0.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_a1d45253d993330293939f88.png", "id": "gf_a1d45253d993330293939f88", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_181d32a63d476e76f271d414", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_a1d45253d993330293939f88.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_a1eda034699b242b16bf8e50.png", "id": "gf_a1eda034699b242b16bf8e50", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b9160a8b256ba7572b08d5cd", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_a1eda034699b242b16bf8e50.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_a1fe17f7842fb1073d4c4c61.png", "id": "gf_a1fe17f7842fb1073d4c4c61", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_ecb8a15663420e1cbafbbc17", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_a1fe17f7842fb1073d4c4c61.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the precompressed passive spring piston. The unbonded orange projectile can separate and strike the free wooden bar off-centre. The bar is not pinned. Continue6seconds, including impact and subsequent motion. Judge the projectile X direction immediately after its FIRST bar impact, not its final position. Visible bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_a23512c4b3b2940af9c26bee.png", "id": "gf_a23512c4b3b2940af9c26bee", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_0377ebc858c5a4ba1b0c6423", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_a23512c4b3b2940af9c26bee.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a27ec968f3868cca9ac5b6db.png", "id": "gf_a27ec968f3868cca9ac5b6db", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_9cb9a27305f8d84bbac172f1", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_a27ec968f3868cca9ac5b6db.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_a2b93a75b664e657eeb62c84.png", "id": "gf_a2b93a75b664e657eeb62c84", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_559e39334951a3db5a6e4696", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_a2b93a75b664e657eeb62c84.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a2e2f2d366c6910753214a84.png", "id": "gf_a2e2f2d366c6910753214a84", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_6d9ed82040adcd0ef8bb303d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_a2e2f2d366c6910753214a84.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a31bf101bede765547eac91e.png", "id": "gf_a31bf101bede765547eac91e", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_ab4ebe9767227637552a65f0", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_a31bf101bede765547eac91e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_a3ae6e812f478aea0f6ce9a8.png", "id": "gf_a3ae6e812f478aea0f6ce9a8", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_59493ab659b22b475e0213ad", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_a3ae6e812f478aea0f6ce9a8.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a3bbdc0343d46cdf7f04fd97.png", "id": "gf_a3bbdc0343d46cdf7f04fd97", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f1fa88f4fe6ea6436eacd9c5", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_a3bbdc0343d46cdf7f04fd97.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_a3cb5831ae0cc1d28b767e5f.png", "id": "gf_a3cb5831ae0cc1d28b767e5f", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_59d4de42e4e95641c527cdba", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_a3cb5831ae0cc1d28b767e5f.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_a420f25798a3ba131435d627.png", "id": "gf_a420f25798a3ba131435d627", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_01e32009d891809e107b9fe2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_a420f25798a3ba131435d627.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_a4884904098692aff7d56d6e.png", "id": "gf_a4884904098692aff7d56d6e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_71269fae753cffeab2a77467", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_a4884904098692aff7d56d6e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_a4e8c9b99ce7d710d2369e4d.png", "id": "gf_a4e8c9b99ce7d710d2369e4d", "observation_time_s": 0.1, "original_partition": "test", "pair_id": "pair_debbd60294490c84a03f3ff2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_a4e8c9b99ce7d710d2369e4d.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_a5324132ef934acfe2c9f511.png", "id": "gf_a5324132ef934acfe2c9f511", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a07a42da0c7eecb30d7e6086", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_a5324132ef934acfe2c9f511.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_a54847eb0d58ede16bb2fb6c.png", "id": "gf_a54847eb0d58ede16bb2fb6c", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_f10d103fff83f03f2bafd2a2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_a54847eb0d58ede16bb2fb6c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a61d41463b8c705c760109d6.png", "id": "gf_a61d41463b8c705c760109d6", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_afbf471ba117e0130d8ad317", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_a61d41463b8c705c760109d6.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_a63963e7377c1eefb1a73db1.png", "id": "gf_a63963e7377c1eefb1a73db1", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4ea5ff46d1263515e0518ab3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_a63963e7377c1eefb1a73db1.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_a71a14908242ce03c366d8d1.png", "id": "gf_a71a14908242ce03c366d8d1", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_abc6ea5908986946f8c68a81", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_a71a14908242ce03c366d8d1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_a7aad2434b0db06aefe3121c.png", "id": "gf_a7aad2434b0db06aefe3121c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4de2a4bdd05a6a84c152d0e7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_a7aad2434b0db06aefe3121c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_a7c1e59d3d30e922fbda7d13.png", "id": "gf_a7c1e59d3d30e922fbda7d13", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_5e684a036de51bf1c7530135", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_a7c1e59d3d30e922fbda7d13.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The orange solid sphere is released from rest and rolls down the ramp toward the initially stationary light-colored sphere. Predict the subsequent motion. There are no hands or active drives. Shared contact assumptions for all samples: equal solid spheres of radius 0.18 m and mass 1 kg; g=9.81 m/s^2; smooth sphere-sphere collisions with restitution 0.8; sphere-support Coulomb friction 0.4; while loaded on the support, each sphere experiences passive torque tau=-2*I*omega. Keep the camera and scene unchanged.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_a7c8f94b7acbf511695325ca.png", "id": "gf_a7c8f94b7acbf511695325ca", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_b20046867c4453ef3c520a5d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_a7c8f94b7acbf511695325ca.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a7eec66450948fedbd7980dc.png", "id": "gf_a7eec66450948fedbd7980dc", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_14df99c817bac16952ca8e4e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_a7eec66450948fedbd7980dc.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a87b6e35fe9db6481d9d862b.png", "id": "gf_a87b6e35fe9db6481d9d862b", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4afdbb846509cf9ceeeef72e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_a87b6e35fe9db6481d9d862b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_a8b55c9447793952e3b89b64.png", "id": "gf_a8b55c9447793952e3b89b64", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_7921971f2a5af2595260ed13", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_a8b55c9447793952e3b89b64.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_a8c3c87f898ea1295a4a2c07.png", "id": "gf_a8c3c87f898ea1295a4a2c07", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_0e92c48a6813e252757e86c9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_a8c3c87f898ea1295a4a2c07.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_a8dfd673fab4b0002ddac82c.png", "id": "gf_a8dfd673fab4b0002ddac82c", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b8ba4708b81c1615839a7ec8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_a8dfd673fab4b0002ddac82c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the precompressed passive spring piston. The unbonded orange projectile with a spherical nose can leave the piston and strike the free uniform wooden bar off-centre on the frictional table. Use stored elastic energy, gravity and the stated contact laws. The bar is not pinned. Predict the full 6 seconds, including the first impact. Label the projectile horizontal direction immediately after its FIRST bar impact, not its final resting position. Bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_a9009e42b316a60db05fd887.png", "id": "gf_a9009e42b316a60db05fd887", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_11f2bca0075ff23ebbe29238", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_a9009e42b316a60db05fd887.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_a90d48643ea20b9ee5fa74d7.png", "id": "gf_a90d48643ea20b9ee5fa74d7", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_5bd412ffb40851a75edb55bf", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_a90d48643ea20b9ee5fa74d7.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_a912353416bfad8d44b3a924.png", "id": "gf_a912353416bfad8d44b3a924", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_51cad9c5f64c22cd8ad75c23", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_a912353416bfad8d44b3a924.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_a9a6b89eb8bb1d61f749d7b2.png", "id": "gf_a9a6b89eb8bb1d61f749d7b2", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_bb2abfa5bd53ef98013a091c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_a9a6b89eb8bb1d61f749d7b2.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_a9b54dc05f43787a1bcaa02a.png", "id": "gf_a9b54dc05f43787a1bcaa02a", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_da2cca522c94f5780710ecdb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_a9b54dc05f43787a1bcaa02a.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_a9b8d4970ce5c7b9a852ed5e.png", "id": "gf_a9b8d4970ce5c7b9a852ed5e", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_a5d299747d9221eb41bb2b18", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_a9b8d4970ce5c7b9a852ed5e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_aa4cb3f6fbfb6524ae4a2434.png", "id": "gf_aa4cb3f6fbfb6524ae4a2434", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_4133e06ab9d5b6fd26b23440", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "separated", "reference_video": "references/gf_aa4cb3f6fbfb6524ae4a2434.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the block on the inclined surface under gravity. It can contact and compress the finite passive spring piston, then may separate; it is not attached to the spring. Continue6seconds under the stated native contact friction and ideal spring/guide conditions. Determine whether block and piston separate after their first contact within the video window, not merely whether the initial frame has a gap. No terminal-rest requirement.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_aaa4395c1aad5bab71ccf5b7.png", "id": "gf_aaa4395c1aad5bab71ccf5b7", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_119156d64450215f681969e0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_aaa4395c1aad5bab71ccf5b7.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_aaedcd02656a01109cfe2772.png", "id": "gf_aaedcd02656a01109cfe2772", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f7e868d0e2dfa66c05b47ee8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_aaedcd02656a01109cfe2772.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_ab215fe06f675e602f98f2a3.png", "id": "gf_ab215fe06f675e602f98f2a3", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f8b1d977ab1def2ec2895465", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ab215fe06f675e602f98f2a3.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_ab5844c590f1b7ffb5e254d1.png", "id": "gf_ab5844c590f1b7ffb5e254d1", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0b4819f36fd70eadcdc42e2a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ab5844c590f1b7ffb5e254d1.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_ab72f36d7263e992f1b681d0.png", "id": "gf_ab72f36d7263e992f1b681d0", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0d2daee1b6de50e27e80c369", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_ab72f36d7263e992f1b681d0.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_abdf6f98817788a3271b4b21.png", "id": "gf_abdf6f98817788a3271b4b21", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_fcd0fb08d21d17891eaed927", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_abdf6f98817788a3271b4b21.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_abe7261bb0d5eb46d528fe4c.png", "id": "gf_abe7261bb0d5eb46d528fe4c", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_0f5cf899e72ec49a3abe5980", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_abe7261bb0d5eb46d528fe4c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_abfbead7e95c05cbc0caa0c4.png", "id": "gf_abfbead7e95c05cbc0caa0c4", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_14df99c817bac16952ca8e4e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_abfbead7e95c05cbc0caa0c4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_ac228060a62661488c4b3acc.png", "id": "gf_ac228060a62661488c4b3acc", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_6d2bb998ce8e3d0fbdb148d2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_ac228060a62661488c4b3acc.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_ac49916d8ea162bf22bd160d.png", "id": "gf_ac49916d8ea162bf22bd160d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_61cc5a2937291b0f58bf3dca", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_ac49916d8ea162bf22bd160d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ac79d47678fa1797ceab20e5.png", "id": "gf_ac79d47678fa1797ceab20e5", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_524c1ed5c603ec899175433d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ac79d47678fa1797ceab20e5.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ac7f86108a06dd5eb8bc202d.png", "id": "gf_ac7f86108a06dd5eb8bc202d", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_beae2c8c72706f28a089e831", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ac7f86108a06dd5eb8bc202d.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_ad22a8dface6c75e4866c250.png", "id": "gf_ad22a8dface6c75e4866c250", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_90599df77bf6632e8ed6ec0b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_left", "reference_video": "references/gf_ad22a8dface6c75e4866c250.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_ad5bb21f7b4c5cbe53ea9834.png", "id": "gf_ad5bb21f7b4c5cbe53ea9834", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_b370e9a8f87e620fef76720b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_ad5bb21f7b4c5cbe53ea9834.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_ad5f6708ef909a8c9483c1be.png", "id": "gf_ad5f6708ef909a8c9483c1be", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f419f924e657c5b9bab9e519", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_ad5f6708ef909a8c9483c1be.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_ad7d7dbdf6578fe6fd550bcd.png", "id": "gf_ad7d7dbdf6578fe6fd550bcd", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4de2a4bdd05a6a84c152d0e7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_ad7d7dbdf6578fe6fd550bcd.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_adbd75c8afa07835e4a8e990.png", "id": "gf_adbd75c8afa07835e4a8e990", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6c34cee1218dfe5d6ae342fe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_adbd75c8afa07835e4a8e990.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. An orange finite spherical bob of radius 0.1 m and mass 0.8 kg is connected to an ideal frictionless planar pivot by a massless rigid link. Pivot-to-centre distance is 0.9 m. The blue free uniform box has width/depth/height [0.22, 0.24, 0.95] m and mass 1.8 kg, resting on a horizontal floor. Contact friction and restitution are zero. The box is free to move when contacted.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_adfb78c0c1de8a0922fee5d3.png", "id": "gf_adfb78c0c1de8a0922fee5d3", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_b465e861a1cd9be19c04b49b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_adfb78c0c1de8a0922fee5d3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "A", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_ae484999e84b99c8e0bfcaf9.png", "id": "gf_ae484999e84b99c8e0bfcaf9", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_30c0e1110bb5870fbe65721f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_left", "reference_video": "references/gf_ae484999e84b99c8e0bfcaf9.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_ae934d1bc708df3cec866348.png", "id": "gf_ae934d1bc708df3cec866348", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_e49a643616a44d11ff94e84e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_ae934d1bc708df3cec866348.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_aec8f357814cd9f6e45896bc.png", "id": "gf_aec8f357814cd9f6e45896bc", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_753e955a881e91cb6f5fc98d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_aec8f357814cd9f6e45896bc.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_b01db69640ba619d53169617.png", "id": "gf_b01db69640ba619d53169617", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_0a8f057771337e4d10c45d2c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_b01db69640ba619d53169617.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_b02fcdad4423e9a956881aaa.png", "id": "gf_b02fcdad4423e9a956881aaa", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_d64e5bcc53c00dd8583c81c7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_b02fcdad4423e9a956881aaa.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_b0f662ab4554dbb563e69623.png", "id": "gf_b0f662ab4554dbb563e69623", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_9219997d0f2b5163298cb901", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_b0f662ab4554dbb563e69623.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b1250b2e2f4968e9ed811fcb.png", "id": "gf_b1250b2e2f4968e9ed811fcb", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_e7332decfd90021c9a30a95a", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_b1250b2e2f4968e9ed811fcb.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_b175f35c70d9fc7447c5a2ca.png", "id": "gf_b175f35c70d9fc7447c5a2ca", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_6a53603101a316c28906aa15", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_b175f35c70d9fc7447c5a2ca.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b1b629ce679fb1726ba5ad63.png", "id": "gf_b1b629ce679fb1726ba5ad63", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_79db4aaab819a6aee1338498", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b1b629ce679fb1726ba5ad63.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_b1ce51f46a0a2e20419c2ffb.png", "id": "gf_b1ce51f46a0a2e20419c2ffb", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_da2ab1d75f76327fe936bdfe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_b1ce51f46a0a2e20419c2ffb.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_b1ec004fbd23cf7b5c8074fb.png", "id": "gf_b1ec004fbd23cf7b5c8074fb", "observation_time_s": 0.4666666666666667, "original_partition": "development", "pair_id": "pair_206b4796dc8d14a22be9825c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_b1ec004fbd23cf7b5c8074fb.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.6 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.46666667 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b20a48faae541bd555461f67.png", "id": "gf_b20a48faae541bd555461f67", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_0e509928e0816a45e994cc34", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b20a48faae541bd555461f67.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_b2455c161cf0d22c8a1da405.png", "id": "gf_b2455c161cf0d22c8a1da405", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_cbf64399132ad000eaf4f80c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_b2455c161cf0d22c8a1da405.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_b38904b04f32a4bcb22cc8c0.png", "id": "gf_b38904b04f32a4bcb22cc8c0", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_ee9d3d54130bb4ea854789a4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_b38904b04f32a4bcb22cc8c0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_b3a27dc40eae2b8ef5346c1f.png", "id": "gf_b3a27dc40eae2b8ef5346c1f", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_c8a9c755e7988a3568e0e8fb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_b3a27dc40eae2b8ef5346c1f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b3ca8c1ec898ebe5db7f5794.png", "id": "gf_b3ca8c1ec898ebe5db7f5794", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f6b7320ef6c2250dc18e7019", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b3ca8c1ec898ebe5db7f5794.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b448c951ab25fd4a6b6964ed.png", "id": "gf_b448c951ab25fd4a6b6964ed", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3d97f39d687d9a9955ad2c25", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b448c951ab25fd4a6b6964ed.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b466c56347169f92ef13ec30.png", "id": "gf_b466c56347169f92ef13ec30", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_181d8184409f8b972dfc5ee3", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b466c56347169f92ef13ec30.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_b47a8002d48b82cec508a389.png", "id": "gf_b47a8002d48b82cec508a389", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_2e3d37404bb9392c2fddcb77", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_b47a8002d48b82cec508a389.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_b4a860d19465d5501169db20.png", "id": "gf_b4a860d19465d5501169db20", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_a37c144f2db58a64aae33801", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_b4a860d19465d5501169db20.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_b4f266fc860b16a7e501c74e.png", "id": "gf_b4f266fc860b16a7e501c74e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_924551911b976104f1c2c83c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_b4f266fc860b16a7e501c74e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_b56fd1371e363bc947ab14e1.png", "id": "gf_b56fd1371e363bc947ab14e1", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_fcd0fb08d21d17891eaed927", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_b56fd1371e363bc947ab14e1.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_b5d72ffbf9e747a03abb6565.png", "id": "gf_b5d72ffbf9e747a03abb6565", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5724eddb33ca52d99221e638", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_b5d72ffbf9e747a03abb6565.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_b5fb08d71f71c30c80daabf6.png", "id": "gf_b5fb08d71f71c30c80daabf6", "observation_time_s": 0.1, "original_partition": "test", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_b5fb08d71f71c30c80daabf6.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b6b4149a943862a86b7558e1.png", "id": "gf_b6b4149a943862a86b7558e1", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_46bf436f75e2e14a606f58ed", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b6b4149a943862a86b7558e1.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_b6ccc67db145e2cf21953aa6.png", "id": "gf_b6ccc67db145e2cf21953aa6", "observation_time_s": 0.5333333333333333, "original_partition": "development", "pair_id": "pair_fed555f2d5e388d12c0b6001", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5666666666666667, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_b6ccc67db145e2cf21953aa6.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.2 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.53333333 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b6ee1ae5f0c35c3183c0952b.png", "id": "gf_b6ee1ae5f0c35c3183c0952b", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_91e1456a27e38be6f960100f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b6ee1ae5f0c35c3183c0952b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b74fb88a249b83ff3d63a5d7.png", "id": "gf_b74fb88a249b83ff3d63a5d7", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_ae1186054c0ef70be086f6ed", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_b74fb88a249b83ff3d63a5d7.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b7d189a416a286ee58bf8a49.png", "id": "gf_b7d189a416a286ee58bf8a49", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_c7eb90095bb634418883c113", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_b7d189a416a286ee58bf8a49.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b7ecf07ff9fef198d2344e7c.png", "id": "gf_b7ecf07ff9fef198d2344e7c", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_5fead38754b9a96ce19cc043", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b7ecf07ff9fef198d2344e7c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b835fcdfd8f7902195c8bd51.png", "id": "gf_b835fcdfd8f7902195c8bd51", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4c1b7d2354e8ac8786e1fe90", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_b835fcdfd8f7902195c8bd51.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_b83f50b90d3eb7dd5c36a5f0.png", "id": "gf_b83f50b90d3eb7dd5c36a5f0", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d12af7ffb241d351d936dcbe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_b83f50b90d3eb7dd5c36a5f0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b8b3a1a8ce55e273d6a0cd3a.png", "id": "gf_b8b3a1a8ce55e273d6a0cd3a", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_ca7744fb3087472d7d4a7bfe", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_b8b3a1a8ce55e273d6a0cd3a.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_b8d7ee6a9b3ec1e197674b2e.png", "id": "gf_b8d7ee6a9b3ec1e197674b2e", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_f5cfa81b95c71f26d735b670", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_b8d7ee6a9b3ec1e197674b2e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_b8e033e30cd062e0d2362c25.png", "id": "gf_b8e033e30cd062e0d2362c25", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_b0d76dc51713f2ffc095c29c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_b8e033e30cd062e0d2362c25.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b8fc52c096b2d83c5b529cb7.png", "id": "gf_b8fc52c096b2d83c5b529cb7", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_7f6b7b9e8d4a61d5778edc0f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b8fc52c096b2d83c5b529cb7.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b92dd913192bd0f8c18bf17e.png", "id": "gf_b92dd913192bd0f8c18bf17e", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_6440512ee6dc8cf7d36df198", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b92dd913192bd0f8c18bf17e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_b941e62aafd7c5f54a87c08d.png", "id": "gf_b941e62aafd7c5f54a87c08d", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_b63c69564441d90bac62dcdc", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_b941e62aafd7c5f54a87c08d.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_b96c7fdda36bee8e5068a104.png", "id": "gf_b96c7fdda36bee8e5068a104", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_cd830f0de37de5ffc93a1d8f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_b96c7fdda36bee8e5068a104.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The loaded lever is released under gravity about its fixed hinge, with a passive stop on the left. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "lever_release_under_gravity"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_b9b0ea82cf92308b8d4f8505.png", "id": "gf_b9b0ea82cf92308b8d4f8505", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_924551911b976104f1c2c83c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_b9b0ea82cf92308b8d4f8505.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_b9cbac26ec006370fa236373.png", "id": "gf_b9cbac26ec006370fa236373", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d268efef23ecb97d6696d17c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_b9cbac26ec006370fa236373.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_b9fe0c9e17ce96bed18ecc43.png", "id": "gf_b9fe0c9e17ce96bed18ecc43", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_7b843775e47c1b5ba2155879", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_b9fe0c9e17ce96bed18ecc43.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_ba02129c6ca3d231b00d4c41.png", "id": "gf_ba02129c6ca3d231b00d4c41", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6ebfe0089f0676af587bf72a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_ba02129c6ca3d231b00d4c41.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ba66cad8abbb6812eefb7704.png", "id": "gf_ba66cad8abbb6812eefb7704", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_b572300fc5c6393fc7667307", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_ba66cad8abbb6812eefb7704.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ba8cd2cec691c7e914ee8c6a.png", "id": "gf_ba8cd2cec691c7e914ee8c6a", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_0d9f8b99e44094a13479ec30", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_ba8cd2cec691c7e914ee8c6a.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_bad5c6b6b5bbe7e4b8701615.png", "id": "gf_bad5c6b6b5bbe7e4b8701615", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6ebfe0089f0676af587bf72a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_bad5c6b6b5bbe7e4b8701615.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_bbb1978fae41223438ecad91.png", "id": "gf_bbb1978fae41223438ecad91", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_93db11dc8b561fb4403c2cce", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_bbb1978fae41223438ecad91.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_bbc8489790440ef12b32f241.png", "id": "gf_bbc8489790440ef12b32f241", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_eceea7afb6d8451e5aaa8ee9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_bbc8489790440ef12b32f241.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_bbccb9ec6506bf4583251548.png", "id": "gf_bbccb9ec6506bf4583251548", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_93642ee14695ff2571e114be", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_bbccb9ec6506bf4583251548.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_bbeef0418547c6a650cb9059.png", "id": "gf_bbeef0418547c6a650cb9059", "observation_time_s": 0.1, "original_partition": "test", "pair_id": "pair_abf37cc561a2bad47caab9d0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_bbeef0418547c6a650cb9059.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_bbef834cf5ff2f6fe19b470c.png", "id": "gf_bbef834cf5ff2f6fe19b470c", "observation_time_s": 0.1, "original_partition": "test", "pair_id": "pair_debbd60294490c84a03f3ff2", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_bbef834cf5ff2f6fe19b470c.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_bd44fb6ecc9a77f45294ea26.png", "id": "gf_bd44fb6ecc9a77f45294ea26", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_8c2b0f7ccac3b6af0f8eff2e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_bd44fb6ecc9a77f45294ea26.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_bd58f0e96ef603b2dd6f58e7.png", "id": "gf_bd58f0e96ef603b2dd6f58e7", "observation_time_s": 2.166666666666667, "original_partition": "development", "pair_id": "pair_2a2c6dfe08177d66aff396bb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_bd58f0e96ef603b2dd6f58e7.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.2 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_be4e07d51c8efa27e2637cdd.png", "id": "gf_be4e07d51c8efa27e2637cdd", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_e6ff48322153f13fd2fafdfa", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_be4e07d51c8efa27e2637cdd.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_bebdc9c131c583b207b5e9a3.png", "id": "gf_bebdc9c131c583b207b5e9a3", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_8596f0dbb29df65818e7113b", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_bebdc9c131c583b207b5e9a3.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_bf5f97e79f73087e2d39575e.png", "id": "gf_bf5f97e79f73087e2d39575e", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_d73cdd91bf89d401388dfab5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_bf5f97e79f73087e2d39575e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_bf899122ca58d653cd3a14d6.png", "id": "gf_bf899122ca58d653cd3a14d6", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_5fead38754b9a96ce19cc043", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_bf899122ca58d653cd3a14d6.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_bf8c12fa4832582a2db1a9a9.png", "id": "gf_bf8c12fa4832582a2db1a9a9", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_3f40ffb64221449899376201", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_bf8c12fa4832582a2db1a9a9.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_bf94d9beaffffc8e8ede8e87.png", "id": "gf_bf94d9beaffffc8e8ede8e87", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_08e25f8ba69942a155f5724e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_bf94d9beaffffc8e8ede8e87.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_bf9607d678463779733d7252.png", "id": "gf_bf9607d678463779733d7252", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_1bc4ef6254203d6df211929c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_bf9607d678463779733d7252.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_bfc2ac0a3821b1a57e72f56d.png", "id": "gf_bfc2ac0a3821b1a57e72f56d", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_17c0b7787a22a0dd78c0aa97", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_bfc2ac0a3821b1a57e72f56d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_bfdb433f89f28b8e9cebbe2d.png", "id": "gf_bfdb433f89f28b8e9cebbe2d", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_cbf64399132ad000eaf4f80c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_bfdb433f89f28b8e9cebbe2d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_bfe5adfa3b1a9b33a9a3fa3b.png", "id": "gf_bfe5adfa3b1a9b33a9a3fa3b", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5b9c41caac554522857feadd", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_bfe5adfa3b1a9b33a9a3fa3b.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_c038208fa0f072b4ccd22396.png", "id": "gf_c038208fa0f072b4ccd22396", "observation_time_s": 0.4, "original_partition": "development", "pair_id": "pair_ad541d8181648a7159e6f5a0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_c038208fa0f072b4ccd22396.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the solid sphere and free horizontal bowl cart under gravity, native contact friction and the visible ideal planar guides. There is no added rolling resistance or damping. Predict 6 seconds. Evaluate the cart displacement direction at 0.4 seconds; continued sphere oscillation is allowed and the final frame is not a terminal-rest label.", "task": "cart_horizontal_direction_at_0_4_s"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "A", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_c083670d9f180321fff525a4.png", "id": "gf_c083670d9f180321fff525a4", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_f527652b656d11e6103e85f8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_c083670d9f180321fff525a4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c0c0deb712e227a6eedd8f01.png", "id": "gf_c0c0deb712e227a6eedd8f01", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_1c8f89f8c6fdaf2f331513b4", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c0c0deb712e227a6eedd8f01.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_c12aa1be153163d23f28bd53.png", "id": "gf_c12aa1be153163d23f28bd53", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_45279472d926dffeca8d4c2b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_c12aa1be153163d23f28bd53.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_c12d555b136a959fbe157af4.png", "id": "gf_c12d555b136a959fbe157af4", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_cf3e8340fd1fd3bf6dd4374d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_c12d555b136a959fbe157af4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c1851a45176a226556a1d8c4.png", "id": "gf_c1851a45176a226556a1d8c4", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_b572300fc5c6393fc7667307", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c1851a45176a226556a1d8c4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_c21dbd9b943ba6c3a31a12e2.png", "id": "gf_c21dbd9b943ba6c3a31a12e2", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f7381de99ac6954868b2f118", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_c21dbd9b943ba6c3a31a12e2.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_c234b70af8331b65e6ec6db2.png", "id": "gf_c234b70af8331b65e6ec6db2", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_b2d4b98542d933087ef6e505", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_c234b70af8331b65e6ec6db2.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the finite spherical pendulum under gravity with its massless rigid link and ideal hinge. The blue target is a free uniform box on a frictionless horizontal floor. Continue4seconds. Determine whether the pendulum sphere contacts the target within that observation window. Visible target height determines both target mass and inertia at the common density. No terminal-rest requirement.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c26dcfe9886ddb8c175dc70b.png", "id": "gf_c26dcfe9886ddb8c175dc70b", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_5f1cd276df4e93425420f981", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c26dcfe9886ddb8c175dc70b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c27a5111f7010ffc46b992ef.png", "id": "gf_c27a5111f7010ffc46b992ef", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_154c8425f0764e9d9b0bc78f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_c27a5111f7010ffc46b992ef.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_c3206d3aaba2a60999370eef.png", "id": "gf_c3206d3aaba2a60999370eef", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_ceca2d8aef721d1a9d520df7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_c3206d3aaba2a60999370eef.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c32223229ce1fd68a33b8fd1.png", "id": "gf_c32223229ce1fd68a33b8fd1", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f7e868d0e2dfa66c05b47ee8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_c32223229ce1fd68a33b8fd1.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_c341f04967bf0d844e3f73f4.png", "id": "gf_c341f04967bf0d844e3f73f4", "observation_time_s": 0.1, "original_partition": "test", "pair_id": "pair_e0c20cb811be1b26d23bb70d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_c341f04967bf0d844e3f73f4.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_c370f8740e613304d8a0cda7.png", "id": "gf_c370f8740e613304d8a0cda7", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_72c72a02e1b41507595bccb0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_c370f8740e613304d8a0cda7.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c3f83a343a3831276ad3ad24.png", "id": "gf_c3f83a343a3831276ad3ad24", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_04a81fca631a3ecaddf95bff", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_c3f83a343a3831276ad3ad24.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["left_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_c42f4e100fabfeee102770de.png", "id": "gf_c42f4e100fabfeee102770de", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_97860e7d64e95f8cffda4c10", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_c42f4e100fabfeee102770de.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. Three pendulums are released simultaneously from rest under gravity (9.81 m/s^2). Each bob is a uniform solid sphere of radius 0.08 m and mass 0.5 kg. The straight suspension links are massless and rigidly attached to their bobs, with ideal frictionless planar pivots; they remain taut. There is no air resistance, damping, motor or collision between bobs. Continue their natural motion for 4 seconds at real-time speed; keep the camera fixed.", "task": "which_pendulum_first_crosses_lowest_position"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c435992fadc777677bd179f1.png", "id": "gf_c435992fadc777677bd179f1", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_34241a346e3e87b3cfd53b73", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c435992fadc777677bd179f1.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_c44f06b09cb5ac97a90e0a12.png", "id": "gf_c44f06b09cb5ac97a90e0a12", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_069c4144e2c591fd218dc4a3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c44f06b09cb5ac97a90e0a12.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c4801c61d2a9b974626db578.png", "id": "gf_c4801c61d2a9b974626db578", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_37d4b1bff79771289b8d095b", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_c4801c61d2a9b974626db578.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_c50a25af01d2aa16086ee3e6.png", "id": "gf_c50a25af01d2aa16086ee3e6", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_aa81a4da80cd56d188edb868", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_c50a25af01d2aa16086ee3e6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c60d7898f4158b3e10887584.png", "id": "gf_c60d7898f4158b3e10887584", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_111508042a552dc15b1bb1bc", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c60d7898f4158b3e10887584.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_c6694fddd173898c11b847a9.png", "id": "gf_c6694fddd173898c11b847a9", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_efbe16ffd2681f88363b8fc6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "retained", "reference_video": "references/gf_c6694fddd173898c11b847a9.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the motion under gravity, passive friction and stored spring energy, with no active drive or external push. The visible guides represent ideal translation constraints. Springs transmit force through the stated native finite-piston/stop mechanism; an unbonded block can separate. Use the common physical constants. Keep the camera fixed and use real-time speed.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_c69212168f1313e068adf643.png", "id": "gf_c69212168f1313e068adf643", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_3251c35290678f1ce56d51de", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c69212168f1313e068adf643.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["left_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "main", "first_frame": "first_frames/gf_c708978ca6feab4369bc0162.png", "id": "gf_c708978ca6feab4369bc0162", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d97c156034ac3051cb41c126", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_c708978ca6feab4369bc0162.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. Three pendulums are released simultaneously from rest under gravity (9.81 m/s^2). Each bob is a uniform solid sphere of radius 0.08 m and mass 0.5 kg. The straight suspension links are massless and rigidly attached to their bobs, with ideal frictionless planar pivots; they remain taut. There is no air resistance, damping, motor or collision between bobs. Continue their natural motion for 4 seconds at real-time speed; keep the camera fixed.", "task": "which_pendulum_first_crosses_lowest_position"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_c724b46cde28429b45d63b10.png", "id": "gf_c724b46cde28429b45d63b10", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5c469b4f04c075476cedf39d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c724b46cde28429b45d63b10.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_c72f8a29ece82862217f2b04.png", "id": "gf_c72f8a29ece82862217f2b04", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_eadd652feb173cfa1481d5ac", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_c72f8a29ece82862217f2b04.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["left_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_c774bc318f3764c3bcc3a9b9.png", "id": "gf_c774bc318f3764c3bcc3a9b9", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d97c156034ac3051cb41c126", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_c774bc318f3764c3bcc3a9b9.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. Three pendulums are released simultaneously from rest under gravity (9.81 m/s^2). Each bob is a uniform solid sphere of radius 0.08 m and mass 0.5 kg. The straight suspension links are massless and rigidly attached to their bobs, with ideal frictionless planar pivots; they remain taut. There is no air resistance, damping, motor or collision between bobs. Continue their natural motion for 4 seconds at real-time speed; keep the camera fixed.", "task": "which_pendulum_first_crosses_lowest_position"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "A", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_c78f87803e6213dc8195d6a5.png", "id": "gf_c78f87803e6213dc8195d6a5", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_82efc3bf009d6b22d3b2ed9a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_c78f87803e6213dc8195d6a5.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_c80f5448cf22c0840005a7d4.png", "id": "gf_c80f5448cf22c0840005a7d4", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_6b8d3761e84675676e3b2f2d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c80f5448cf22c0840005a7d4.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c84168594efc3c12922ae21e.png", "id": "gf_c84168594efc3c12922ae21e", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_37d4b1bff79771289b8d095b", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_c84168594efc3c12922ae21e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c84cdadfd9fdeed7dda6bb9f.png", "id": "gf_c84cdadfd9fdeed7dda6bb9f", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_4829ae2f9d705aa532609ed9", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_c84cdadfd9fdeed7dda6bb9f.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_c8de1e69d99ad340a4de958c.png", "id": "gf_c8de1e69d99ad340a4de958c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1b806bbd0346cc796ae8f88e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_c8de1e69d99ad340a4de958c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c9492062e10afbfaab3443fb.png", "id": "gf_c9492062e10afbfaab3443fb", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_7e0c77b2913ec2c5dda5fe9c", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_c9492062e10afbfaab3443fb.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_c97240a35d0224f2381649c0.png", "id": "gf_c97240a35d0224f2381649c0", "observation_time_s": 2.466666666666667, "original_partition": "validation", "pair_id": "pair_6d37c4dc2c3c2cadebd265ed", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_c97240a35d0224f2381649c0.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_c9bd44a15dff90223fc479b7.png", "id": "gf_c9bd44a15dff90223fc479b7", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_670e23722baaf0d004ae9418", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_c9bd44a15dff90223fc479b7.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_ca3fba4ec736cbebdce32aaa.png", "id": "gf_ca3fba4ec736cbebdce32aaa", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5724eddb33ca52d99221e638", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_ca3fba4ec736cbebdce32aaa.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ca4f1204088651f983281cc8.png", "id": "gf_ca4f1204088651f983281cc8", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_507ad89f9977e57f703e8a03", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_ca4f1204088651f983281cc8.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_ca89b1fec51d05b5b4408e55.png", "id": "gf_ca89b1fec51d05b5b4408e55", "observation_time_s": 0.5333333333333333, "original_partition": "development", "pair_id": "pair_841651fe85b0df7cac6303a8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5666666666666667, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_ca89b1fec51d05b5b4408e55.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.0 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.53333333 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_ca8dadbbebd666e75da86c3c.png", "id": "gf_ca8dadbbebd666e75da86c3c", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_a5d299747d9221eb41bb2b18", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_ca8dadbbebd666e75da86c3c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_cab9fa64034caa05be8b9a54.png", "id": "gf_cab9fa64034caa05be8b9a54", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_3f560c69f89193ef2a18dd0b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_cab9fa64034caa05be8b9a54.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_cacedf23c7999ab61e294010.png", "id": "gf_cacedf23c7999ab61e294010", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_0b41449471f2c0b12758b295", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_cacedf23c7999ab61e294010.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_cb6b30b431108a2dcd433125.png", "id": "gf_cb6b30b431108a2dcd433125", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_a92e078dfcf756b839384311", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "retained", "reference_video": "references/gf_cb6b30b431108a2dcd433125.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the block on the inclined surface under gravity. It can contact and compress the finite passive spring piston, then may separate; it is not attached to the spring. Continue6seconds under the stated native contact friction and ideal spring/guide conditions. Determine whether block and piston separate after their first contact within the video window, not merely whether the initial frame has a gap. No terminal-rest requirement.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_cb77e523cdba1d2b4c0a65bd.png", "id": "gf_cb77e523cdba1d2b4c0a65bd", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d195c7a8e5a25e6724023f60", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_cb77e523cdba1d2b4c0a65bd.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_cb9b64640d043fe2bcd38869.png", "id": "gf_cb9b64640d043fe2bcd38869", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_f527652b656d11e6103e85f8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_cb9b64640d043fe2bcd38869.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_cba33f16a60cbd9faf17efc5.png", "id": "gf_cba33f16a60cbd9faf17efc5", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_4829ae2f9d705aa532609ed9", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_cba33f16a60cbd9faf17efc5.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_cba61bf66d9cdd86e77a9fbf.png", "id": "gf_cba61bf66d9cdd86e77a9fbf", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_4655da2d00143dc5dc20779d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_cba61bf66d9cdd86e77a9fbf.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_cc0f99f80758634937f5fe31.png", "id": "gf_cc0f99f80758634937f5fe31", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_015077a0424563afbcbb2dee", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_cc0f99f80758634937f5fe31.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["downhill", "uphill"], "category": "contact", "condition": "A", "construction_subset": "parameter_conditioned_single_first_frame", "first_frame": "first_frames/gf_cc8e7eae8c3e92debf6b60a0.png", "id": "gf_cc8e7eae8c3e92debf6b60a0", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_90a3986417cd4f162be3b4b0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "downhill", "reference_video": "references/gf_cc8e7eae8c3e92debf6b60a0.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the subsequent motion under gravity, the permanently attached preloaded ideal Hooke spring, passive friction, and the ideal massless inextensible rope. There are no hands, active motors or external pushes. Keep the scene and camera unchanged; use realistic physics and real-time speed. Use the shared physical conditions provided with this apparatus. Do not infer the spring rest length or hidden mass/inertia from color.", "task": "A_initial_slope_direction_at_0_2_s"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_cd33963a07abce2d31887e15.png", "id": "gf_cd33963a07abce2d31887e15", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_927537d9f354f8ff6968613d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_cd33963a07abce2d31887e15.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["downhill", "uphill"], "category": "contact", "condition": "B", "construction_subset": "parameter_conditioned_single_first_frame", "first_frame": "first_frames/gf_cd39a76d52a2167787679fbf.png", "id": "gf_cd39a76d52a2167787679fbf", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_90a3986417cd4f162be3b4b0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "uphill", "reference_video": "references/gf_cd39a76d52a2167787679fbf.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the subsequent motion under gravity, the permanently attached preloaded ideal Hooke spring, passive friction, and the ideal massless inextensible rope. There are no hands, active motors or external pushes. Keep the scene and camera unchanged; use realistic physics and real-time speed. Use the shared physical conditions provided with this apparatus. Do not infer the spring rest length or hidden mass/inertia from color.", "task": "A_initial_slope_direction_at_0_2_s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_cd8f631bf33660ededf815b9.png", "id": "gf_cd8f631bf33660ededf815b9", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f6f38eec801d8c01c2f1d7a1", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_cd8f631bf33660ededf815b9.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_ce6ac223049df0f24a3074f0.png", "id": "gf_ce6ac223049df0f24a3074f0", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_e5ac348e0144292bd75cf87a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_ce6ac223049df0f24a3074f0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_cec6ca782b4f1154725ac0e1.png", "id": "gf_cec6ca782b4f1154725ac0e1", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_3c4f5115c3e40551ece3f6dc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_cec6ca782b4f1154725ac0e1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_cf1cf0d9039e3d0bedeb2051.png", "id": "gf_cf1cf0d9039e3d0bedeb2051", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_86c0b097be72c51eefb23a7b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_cf1cf0d9039e3d0bedeb2051.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_cf1d88495ce987fc8b79b0b1.png", "id": "gf_cf1d88495ce987fc8b79b0b1", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_b9254f3a1d0898cb0ac89aaa", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_cf1d88495ce987fc8b79b0b1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_cf219b0b4de3c06a81ebc79a.png", "id": "gf_cf219b0b4de3c06a81ebc79a", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_30c0e1110bb5870fbe65721f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_right", "reference_video": "references/gf_cf219b0b4de3c06a81ebc79a.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_cf334c8275f9bc881afda909.png", "id": "gf_cf334c8275f9bc881afda909", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_d693b37ef6ac38eea96eec73", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_cf334c8275f9bc881afda909.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. Two uniform solid rods form a double pendulum with ideal frictionless planar hinges. Upper/lower rod lengths are [0.62, 0.72] m, masses [1.27875, 1.485] kg, rectangular cross-section 0.055 by 0.075 m. Adjacent rods do not collide at their ideal joint.", "task": "upper_rod_horizontal_direction_at_0_2_s"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_cf7eecdf53d4003dd9ebac86.png", "id": "gf_cf7eecdf53d4003dd9ebac86", "observation_time_s": 2.466666666666667, "original_partition": "validation", "pair_id": "pair_f2e993c4059e7b84dff3daf4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_cf7eecdf53d4003dd9ebac86.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "A", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_cfd857b4a8c2dd51d9f953cf.png", "id": "gf_cfd857b4a8c2dd51d9f953cf", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_38ac814b0318eb4aecd1d7ec", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_cfd857b4a8c2dd51d9f953cf.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the finite spherical pendulum under gravity with its massless rigid link and ideal hinge. The blue target is a free uniform box on a frictionless horizontal floor. Continue4seconds. Determine whether the pendulum sphere contacts the target within that observation window. Visible target height determines both target mass and inertia at the common density. No terminal-rest requirement.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_cfe0e02cde9c04c8b71197d5.png", "id": "gf_cfe0e02cde9c04c8b71197d5", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_526e23280c2a41b14e0bcaef", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_cfe0e02cde9c04c8b71197d5.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_d081c2e1ad05a1dc9d4bf215.png", "id": "gf_d081c2e1ad05a1dc9d4bf215", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_8c2b0f7ccac3b6af0f8eff2e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_d081c2e1ad05a1dc9d4bf215.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_d088ec91231cb4d3ee8fffa0.png", "id": "gf_d088ec91231cb4d3ee8fffa0", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_5f41b2a08f1d59c74a7132bb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_d088ec91231cb4d3ee8fffa0.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_d0cc655d917b1f063f12c821.png", "id": "gf_d0cc655d917b1f063f12c821", "observation_time_s": 0.4, "original_partition": "development", "pair_id": "pair_ad541d8181648a7159e6f5a0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_d0cc655d917b1f063f12c821.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the solid sphere and free horizontal bowl cart under gravity, native contact friction and the visible ideal planar guides. There is no added rolling resistance or damping. Predict 6 seconds. Evaluate the cart displacement direction at 0.4 seconds; continued sphere oscillation is allowed and the final frame is not a terminal-rest label.", "task": "cart_horizontal_direction_at_0_4_s"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_d0ddab9c95dc1d07e79f33a4.png", "id": "gf_d0ddab9c95dc1d07e79f33a4", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6fcff65d2f946339508e83e4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "middle_first", "reference_video": "references/gf_d0ddab9c95dc1d07e79f33a4.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_d1102d6ff68a128e71e69c82.png", "id": "gf_d1102d6ff68a128e71e69c82", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_d308e46e84a6efe6a1da3a8c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_d1102d6ff68a128e71e69c82.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_d16efbe8e8152dddc840933e.png", "id": "gf_d16efbe8e8152dddc840933e", "observation_time_s": 0.3, "original_partition": "development", "pair_id": "pair_f69ab1560c95f0fe6ea311ac", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_d16efbe8e8152dddc840933e.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The two connected rigid rods are released from rest under gravity. Passive hinge friction is present; there is no active drive or external push. Predict the upper rod initial motion. Keep the camera and scene unchanged and use real-time speed.", "task": "upper_rod_direction_at_0_3_s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_d1b490430865f95210950f31.png", "id": "gf_d1b490430865f95210950f31", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_e4a37846a4c40a3f474432cc", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_d1b490430865f95210950f31.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_d1db931fd4fdb3c929aa567f.png", "id": "gf_d1db931fd4fdb3c929aa567f", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0d2daee1b6de50e27e80c369", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_d1db931fd4fdb3c929aa567f.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_d1dc142bbd103253dce384e5.png", "id": "gf_d1dc142bbd103253dce384e5", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_c79057800c85d25e56f1f047", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_d1dc142bbd103253dce384e5.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_d2266f4e9b6e5d8e80ba7491.png", "id": "gf_d2266f4e9b6e5d8e80ba7491", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_0c04fdd0dcbd86ebc18485ed", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_d2266f4e9b6e5d8e80ba7491.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_d23d6fe87dc8c456ef0d8b5e.png", "id": "gf_d23d6fe87dc8c456ef0d8b5e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_cf1359079b9d0fbabb67b45f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_d23d6fe87dc8c456ef0d8b5e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_d2d190579afa3b13787327a4.png", "id": "gf_d2d190579afa3b13787327a4", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_8e172dae7b6e16382284fb85", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_d2d190579afa3b13787327a4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_d2edec034d196fd386382cc8.png", "id": "gf_d2edec034d196fd386382cc8", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_d18dfe8bb5c7c672c0f92ea6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_up", "reference_video": "references/gf_d2edec034d196fd386382cc8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_d2f048dca0ac3514a3da52d5.png", "id": "gf_d2f048dca0ac3514a3da52d5", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_46a16c010789c0fc4b4a2cf9", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_d2f048dca0ac3514a3da52d5.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_d36e10a8b9c75d64ef3829ee.png", "id": "gf_d36e10a8b9c75d64ef3829ee", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_e46a9c1a81b273ea3432016a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_d36e10a8b9c75d64ef3829ee.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_d42dd90ffb9613b954fcaa90.png", "id": "gf_d42dd90ffb9613b954fcaa90", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f91638597d50442c559a91f5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_d42dd90ffb9613b954fcaa90.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_d4a4786dc7828c5ee34c14dd.png", "id": "gf_d4a4786dc7828c5ee34c14dd", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_10159a996f41aec94f0d3a74", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_d4a4786dc7828c5ee34c14dd.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_d51eba1fea13fdfd725fdeaf.png", "id": "gf_d51eba1fea13fdfd725fdeaf", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_6440512ee6dc8cf7d36df198", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_d51eba1fea13fdfd725fdeaf.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "A", "construction_subset": "hill", "first_frame": "first_frames/gf_d555b1ebd0a40c4ba6ff4bfc.png", "id": "gf_d555b1ebd0a40c4ba6ff4bfc", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_38c2a92634bb0d67a4bcf536", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_d555b1ebd0a40c4ba6ff4bfc.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_d58f97bf661741510f8d2aab.png", "id": "gf_d58f97bf661741510f8d2aab", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_61cc5a2937291b0f58bf3dca", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_d58f97bf661741510f8d2aab.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_d5a425cf193bd6780630d4dd.png", "id": "gf_d5a425cf193bd6780630d4dd", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_18922f58f0ad28822aff2d17", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_d5a425cf193bd6780630d4dd.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "A", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_d5ddddf3d60256dda5c11478.png", "id": "gf_d5ddddf3d60256dda5c11478", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_7c25aa2665aff7f5e7649bf0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_d5ddddf3d60256dda5c11478.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_d5f66026be1565c794ec2ec2.png", "id": "gf_d5f66026be1565c794ec2ec2", "observation_time_s": 0.5333333333333333, "original_partition": "development", "pair_id": "pair_cbbe41be32871d1dcec20f63", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5666666666666667, "reference_fps": 30.0, "reference_label": "detached", "reference_video": "references/gf_d5f66026be1565c794ec2ec2.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.2 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.53333333 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_d689b7208547ef33590a6bd9.png", "id": "gf_d689b7208547ef33590a6bd9", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_8ace1f97f054209cf89025ca", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_d689b7208547ef33590a6bd9.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_d68d3865b9528af629630b6b.png", "id": "gf_d68d3865b9528af629630b6b", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_8f0e5d56a9aafee95bc4678a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_d68d3865b9528af629630b6b.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_d6d3a9fafa98a450f0190594.png", "id": "gf_d6d3a9fafa98a450f0190594", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_97b82236a4b7bcabfb29c1dc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_d6d3a9fafa98a450f0190594.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_d6def21e61927af8efa9d2f2.png", "id": "gf_d6def21e61927af8efa9d2f2", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_82efc3bf009d6b22d3b2ed9a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_d6def21e61927af8efa9d2f2.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_d716fad7d67bb04344ea85dc.png", "id": "gf_d716fad7d67bb04344ea85dc", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_525c8519d0f53b60fa16ee54", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_d716fad7d67bb04344ea85dc.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_d73a9310d6961def0b1c8953.png", "id": "gf_d73a9310d6961def0b1c8953", "observation_time_s": 0.5333333333333333, "original_partition": "development", "pair_id": "pair_bd66cd1e19dd0ff1faed8ae1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5666666666666667, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_d73a9310d6961def0b1c8953.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 2.0 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.53333333 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["left", "right"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_d7456f870aa32176bd1ac4a8.png", "id": "gf_d7456f870aa32176bd1ac4a8", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_c5f9903fd336ff99ec7b6b87", "prompt_status": "source-delivery-prompt", "reference_duration_s": 10.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_d7456f870aa32176bd1ac4a8.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The blocks and moving base are released from rest. Predict the right block initial motion in world coordinates under passive connected springs and Coulomb friction. No active drive or external push. Keep the camera fixed and use real-time speed.", "task": "right_block_absolute_direction_at_0_2_s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_d7992f7be9f3bbfbdd6c098e.png", "id": "gf_d7992f7be9f3bbfbdd6c098e", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_b2446d50af7776beb01b98de", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_d7992f7be9f3bbfbdd6c098e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_d7aba89807f79c1ea788dc4e.png", "id": "gf_d7aba89807f79c1ea788dc4e", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_053237499e9db0685f0b309d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_d7aba89807f79c1ea788dc4e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_d7e93467974945b86591aebe.png", "id": "gf_d7e93467974945b86591aebe", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_3275d2ac6a2813b4db716799", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_d7e93467974945b86591aebe.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_d825718ca74f296622ca088d.png", "id": "gf_d825718ca74f296622ca088d", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": "pair_5ad79da00afc39670f032341", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_d825718ca74f296622ca088d.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_d849cb83a00fc4327596dbcc.png", "id": "gf_d849cb83a00fc4327596dbcc", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_a37c144f2db58a64aae33801", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_d849cb83a00fc4327596dbcc.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_d888aba45716896454369f4d.png", "id": "gf_d888aba45716896454369f4d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_65f7505c1e615dc84c8a2283", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_d888aba45716896454369f4d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_d895a6b5cab6eebc38a5f091.png", "id": "gf_d895a6b5cab6eebc38a5f091", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_070b0caedf959b064953a1eb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_d895a6b5cab6eebc38a5f091.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_d8a01d25f44ae86511e463fd.png", "id": "gf_d8a01d25f44ae86511e463fd", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0b4819f36fd70eadcdc42e2a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_d8a01d25f44ae86511e463fd.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "A", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_d91b1d7d8cbc7130a245feeb.png", "id": "gf_d91b1d7d8cbc7130a245feeb", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_a5129c5ab550b5f65438cac0", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_d91b1d7d8cbc7130a245feeb.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_d926e562c3c289b7876cec3e.png", "id": "gf_d926e562c3c289b7876cec3e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6b707d97009d8a2e01e078d9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_d926e562c3c289b7876cec3e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_d98031e21a18776e44bfae07.png", "id": "gf_d98031e21a18776e44bfae07", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6b9801d86cdb2abbc01b401b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_d98031e21a18776e44bfae07.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_d98a6e7a826c8358c5f48a03.png", "id": "gf_d98a6e7a826c8358c5f48a03", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_0e305f2ccb2a950c9a65d705", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_d98a6e7a826c8358c5f48a03.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_d9d7e04f60cae22809553a7e.png", "id": "gf_d9d7e04f60cae22809553a7e", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_c9860591be9030cdedcfeef8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_d9d7e04f60cae22809553a7e.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_da3ec5a45f65554f11551e02.png", "id": "gf_da3ec5a45f65554f11551e02", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_3db60b9e15890e697b43ec75", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_da3ec5a45f65554f11551e02.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. An orange finite spherical bob of radius 0.13 m and mass 1.2 kg is connected to an ideal frictionless planar pivot by a massless rigid link. Pivot-to-centre distance is 1.1 m. The blue free uniform box has width/depth/height [0.28, 0.28, 1.05] m and mass 2.4 kg, resting on a horizontal floor. Contact friction and restitution are zero. The box is free to move when contacted.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_da66ca83b558df13ea33c6da.png", "id": "gf_da66ca83b558df13ea33c6da", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_d76162d82f46e3bd57340b73", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_da66ca83b558df13ea33c6da.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_da8578e7d6e5345a7c150451.png", "id": "gf_da8578e7d6e5345a7c150451", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_8596f0dbb29df65818e7113b", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_da8578e7d6e5345a7c150451.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "time_countercontrol", "first_frame": "first_frames/gf_da8edbc7f34dfa41973d3233.png", "id": "gf_da8edbc7f34dfa41973d3233", "observation_time_s": 0.6666666666666666, "original_partition": "development", "pair_id": "pair_82cf76b398e9af86fe40df71", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.7, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_da8edbc7f34dfa41973d3233.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.6 m long, 0.03 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.66666667 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_db07614664555f4dfb7ef10b.png", "id": "gf_db07614664555f4dfb7ef10b", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_13870bf04aa440df98fbc25a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_db07614664555f4dfb7ef10b.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_db17c1333034bf399163d27e.png", "id": "gf_db17c1333034bf399163d27e", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_029c8de677e833104ad0f011", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_db17c1333034bf399163d27e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_db7a2073944348d4bcea4d2d.png", "id": "gf_db7a2073944348d4bcea4d2d", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_6aa7e7f3f07934051980c3d4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_db7a2073944348d4bcea4d2d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_db92a19ddf5b9e93edfd19d9.png", "id": "gf_db92a19ddf5b9e93edfd19d9", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3f67f6ae4aeb31fd7a4ffb10", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_db92a19ddf5b9e93edfd19d9.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_db9cf57a2889c1bf6e6d546a.png", "id": "gf_db9cf57a2889c1bf6e6d546a", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_abc6ea5908986946f8c68a81", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_db9cf57a2889c1bf6e6d546a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_dbd86fb6093d21367a6108d6.png", "id": "gf_dbd86fb6093d21367a6108d6", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_015077a0424563afbcbb2dee", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_up", "reference_video": "references/gf_dbd86fb6093d21367a6108d6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_dbe04966294759e052bb430f.png", "id": "gf_dbe04966294759e052bb430f", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_69b0ff998c9575b3ed4437ab", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_dbe04966294759e052bb430f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_dc7074b237f819cb2aef35ab.png", "id": "gf_dc7074b237f819cb2aef35ab", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_da9de80d6b3f52632afe59ab", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_dc7074b237f819cb2aef35ab.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_dceb69eac838c76246d619eb.png", "id": "gf_dceb69eac838c76246d619eb", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_ac252164b7ce0d6e99e41a2a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_dceb69eac838c76246d619eb.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_edge_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_dcf3285d5ce3ee3705e8e67b.png", "id": "gf_dcf3285d5ce3ee3705e8e67b", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_eceea7afb6d8451e5aaa8ee9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_dcf3285d5ce3ee3705e8e67b.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "construction_subset": "main", "first_frame": "first_frames/gf_dd0a1feacd7c6e1a937214c9.png", "id": "gf_dd0a1feacd7c6e1a937214c9", "observation_time_s": 0.1, "original_partition": "train", "pair_id": null, "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_dd0a1feacd7c6e1a937214c9.mp4", "role": "auxiliary_control", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_dd12f57debd405a681a367fb.png", "id": "gf_dd12f57debd405a681a367fb", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_b8e31e66159d47f8e185ff5a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_dd12f57debd405a681a367fb.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the precompressed passive spring piston. The unbonded orange projectile can separate and strike the free wooden bar off-centre. The bar is not pinned. Continue6seconds, including impact and subsequent motion. Judge the projectile X direction immediately after its FIRST bar impact, not its final position. Visible bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "three_pendulums", "first_frame": "first_frames/gf_dd293b7bd48ee20231378f26.png", "id": "gf_dd293b7bd48ee20231378f26", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_059c4adc2534f24c91cc00de", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_dd293b7bd48ee20231378f26.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release all three pendulums simultaneously. Predict which bob first crosses the lowest point of its swing. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_dd5b7f1dccdb1bf2a2bbb2aa.png", "id": "gf_dd5b7f1dccdb1bf2a2bbb2aa", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_f8c97321776f16b4a0fce156", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_dd5b7f1dccdb1bf2a2bbb2aa.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_dd863a44e92d94d47373fa20.png", "id": "gf_dd863a44e92d94d47373fa20", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_59b885ed9589ae154d17f6ab", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_dd863a44e92d94d47373fa20.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_dd9c101a11d625c5ef729b01.png", "id": "gf_dd9c101a11d625c5ef729b01", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_677e9bbc9f22878afff07363", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_dd9c101a11d625c5ef729b01.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_de283cb5b069e9f479dba889.png", "id": "gf_de283cb5b069e9f479dba889", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_8234cfd56843e83671540d5b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_de283cb5b069e9f479dba889.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the precompressed passive spring piston. The unbonded orange projectile can separate and strike the free wooden bar off-centre. The bar is not pinned. Continue6seconds, including impact and subsequent motion. Judge the projectile X direction immediately after its FIRST bar impact, not its final position. Visible bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_de8e18da32d8ea97c81cc99f.png", "id": "gf_de8e18da32d8ea97c81cc99f", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_38c2a92634bb0d67a4bcf536", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_de8e18da32d8ea97c81cc99f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_dff74c72aaa291ef30e35ba3.png", "id": "gf_dff74c72aaa291ef30e35ba3", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4675c85b3c7be8318beef7ab", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_dff74c72aaa291ef30e35ba3.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_dffd9b003e61f431518e7404.png", "id": "gf_dffd9b003e61f431518e7404", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_d9c516642df96ce45fa2ee57", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_dffd9b003e61f431518e7404.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_e063ef30d1030520c02206d1.png", "id": "gf_e063ef30d1030520c02206d1", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_540d71fc67e0d63fbf7cef93", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_e063ef30d1030520c02206d1.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_e09bd4771a0878f004534bb5.png", "id": "gf_e09bd4771a0878f004534bb5", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a1d3c396ea5524b80e161572", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_e09bd4771a0878f004534bb5.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_e09cc65427bfc1cd8cb8e293.png", "id": "gf_e09cc65427bfc1cd8cb8e293", "observation_time_s": 0.1, "original_partition": "validation", "pair_id": "pair_abcc477edbedc1e20213f037", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_e09cc65427bfc1cd8cb8e293.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_e0ccf1d3aeba10af612209da.png", "id": "gf_e0ccf1d3aeba10af612209da", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_eaaf7b189c9c4c075e8fffce", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_e0ccf1d3aeba10af612209da.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_e20d7d2116522081aca4c269.png", "id": "gf_e20d7d2116522081aca4c269", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_1c8f89f8c6fdaf2f331513b4", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_e20d7d2116522081aca4c269.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_e2e64813dd8d12a9cb2ee049.png", "id": "gf_e2e64813dd8d12a9cb2ee049", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_2a4577f04e596e7a4f77a00e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_e2e64813dd8d12a9cb2ee049.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_e306fc4facd2f6d0a1fb7c36.png", "id": "gf_e306fc4facd2f6d0a1fb7c36", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_49bc863a57cf94d49682548f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_e306fc4facd2f6d0a1fb7c36.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_e3c91ff2bee8373e4d040468.png", "id": "gf_e3c91ff2bee8373e4d040468", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_4015e9ffd976cb35914a9594", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_e3c91ff2bee8373e4d040468.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_e46699a27eb20ffda3224945.png", "id": "gf_e46699a27eb20ffda3224945", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_0370d95f66dd07a65b222320", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_e46699a27eb20ffda3224945.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_e48e7b913d9d56d0361756b0.png", "id": "gf_e48e7b913d9d56d0361756b0", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_efbe16ffd2681f88363b8fc6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "separated", "reference_video": "references/gf_e48e7b913d9d56d0361756b0.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the motion under gravity, passive friction and stored spring energy, with no active drive or external push. The visible guides represent ideal translation constraints. Springs transmit force through the stated native finite-piston/stop mechanism; an unbonded block can separate. Use the common physical constants. Keep the camera fixed and use real-time speed.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_e4d0045ef9332d0656f3c60f.png", "id": "gf_e4d0045ef9332d0656f3c60f", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_530a7b880c0cc03c7290f48e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_e4d0045ef9332d0656f3c60f.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_e4d6f8150b36fb06f75716ac.png", "id": "gf_e4d6f8150b36fb06f75716ac", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e580760f95ab7e15d43e9ec9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_e4d6f8150b36fb06f75716ac.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_e4dad892c20c42a35e9042f0.png", "id": "gf_e4dad892c20c42a35e9042f0", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_8ff4443e170ae89c2e860bbe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_e4dad892c20c42a35e9042f0.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["approach", "separate", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_e4f1f1bf56746fc7b1ef22bc.png", "id": "gf_e4f1f1bf56746fc7b1ef22bc", "observation_time_s": 0.1, "original_partition": "train", "pair_id": "pair_d92d495c421506721c263128", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_e4f1f1bf56746fc7b1ef22bc.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange blocks are connected by a spring. The fixed gray apparatus behind them shows the spring at its natural length. The orange blocks are released from rest. Use an ideal massless Hooke spring: each block is 1 kg, stiffness is 14 N/m, friction and damping are zero. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "spring_initial_response"}
{"allowed_labels": ["left", "right"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_e5dba7e59cf00f80cd47e9d1.png", "id": "gf_e5dba7e59cf00f80cd47e9d1", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_b18b1bc5fd4650e1a09db81d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_e5dba7e59cf00f80cd47e9d1.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the motion under gravity, passive friction and stored spring energy, with no active drive or external push. The visible guides represent ideal translation constraints. Springs transmit force through the stated native finite-piston/stop mechanism; an unbonded block can separate. Use the common physical constants. Keep the camera fixed and use real-time speed.", "task": "left_block_direction_at_0_2_s"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_e647f77ef94c744617aefbf7.png", "id": "gf_e647f77ef94c744617aefbf7", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_93ad8e7a369bdcf78f5583eb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_e647f77ef94c744617aefbf7.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_e67132c50abcb86efe66709a.png", "id": "gf_e67132c50abcb86efe66709a", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_d73cdd91bf89d401388dfab5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "backward", "reference_video": "references/gf_e67132c50abcb86efe66709a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_e686d89e37e6a345044c3de4.png", "id": "gf_e686d89e37e6a345044c3de4", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_8c6440530e8094c82e3993d9", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_e686d89e37e6a345044c3de4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_e6dc220e80e461083f66713d.png", "id": "gf_e6dc220e80e461083f66713d", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_5a3c3b7c2e9b03aa377256b1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_e6dc220e80e461083f66713d.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_e6fb626341643e0edd861c67.png", "id": "gf_e6fb626341643e0edd861c67", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_91485177e4fbcfef8d2d05c8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_e6fb626341643e0edd861c67.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_e723a5cdd4467a0bccfba2f1.png", "id": "gf_e723a5cdd4467a0bccfba2f1", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_e7064df822c9bfcb26c6304d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_e723a5cdd4467a0bccfba2f1.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_e7534dd054707532340f66ca.png", "id": "gf_e7534dd054707532340f66ca", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_5a3c3b7c2e9b03aa377256b1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_e7534dd054707532340f66ca.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_e7664c3ea5757649b543d086.png", "id": "gf_e7664c3ea5757649b543d086", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_38ac814b0318eb4aecd1d7ec", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_e7664c3ea5757649b543d086.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the finite spherical pendulum under gravity with its massless rigid link and ideal hinge. The blue target is a free uniform box on a frictionless horizontal floor. Continue4seconds. Determine whether the pendulum sphere contacts the target within that observation window. Visible target height determines both target mass and inertia at the common density. No terminal-rest requirement.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_e77a1fbb96d59858c68af3ac.png", "id": "gf_e77a1fbb96d59858c68af3ac", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_93e1f6214b1baf1ad2cb6489", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_e77a1fbb96d59858c68af3ac.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_e77ef8e9aeb2e706f3a7c2cb.png", "id": "gf_e77ef8e9aeb2e706f3a7c2cb", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_85d2fecaeffcdaa16b304b7d", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_e77ef8e9aeb2e706f3a7c2cb.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_e7c24cf9797b1accc67d11e1.png", "id": "gf_e7c24cf9797b1accc67d11e1", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_0ceffbd481df74a276f1b82d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_e7c24cf9797b1accc67d11e1.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_e7de361e0deaee05eea0ec42.png", "id": "gf_e7de361e0deaee05eea0ec42", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_f79f5fb8be637e1c24987993", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_e7de361e0deaee05eea0ec42.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["left_down", "left_up"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_e7e8e6e8dc0ab623cea0fdbe.png", "id": "gf_e7e8e6e8dc0ab623cea0fdbe", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_408749185693a9b5bed305b3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "left_down", "reference_video": "references/gf_e7e8e6e8dc0ab623cea0fdbe.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "left_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_e7ead6554384dd1079321e9a.png", "id": "gf_e7ead6554384dd1079321e9a", "observation_time_s": 0.4, "original_partition": "development", "pair_id": "pair_74ba8e42d35947e2d7c08478", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_right", "reference_video": "references/gf_e7ead6554384dd1079321e9a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The wheel with its visibly fixed eccentric weight is released under gravity on a horizontal surface. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "eccentric_wheel_initial_roll_direction"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_e8e7fec0afd148b52704a004.png", "id": "gf_e8e7fec0afd148b52704a004", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_74aa905678c482209b06a473", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_e8e7fec0afd148b52704a004.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_e91babf6150e0cb59ddd9aca.png", "id": "gf_e91babf6150e0cb59ddd9aca", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f7db08a25e3764bc98a9023d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_e91babf6150e0cb59ddd9aca.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "pulley_stop_support_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_e93925f348745d71ec8b5af1.png", "id": "gf_e93925f348745d71ec8b5af1", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_18922f58f0ad28822aff2d17", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_e93925f348745d71ec8b5af1.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["right_down", "right_up", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_geometry_expansion_01", "first_frame": "first_frames/gf_e9bc4d25a355dbf39f10ae20.png", "id": "gf_e9bc4d25a355dbf39f10ae20", "observation_time_s": 1.0, "original_partition": "development", "pair_id": "pair_3c4f5115c3e40551ece3f6dc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "right_down", "reference_video": "references/gf_e9bc4d25a355dbf39f10ae20.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame, with all bodies initially at rest. Use the shared physical conditions. Keep the scene, materials and camera unchanged; continue at real-time speed. No hands, people or active drive. Release the visible loads under gravity with the stated ideal taut no-slip massless rope, finite rotor inertia and passive bearing friction. Uniform same-material cubes share the stated density; do not infer mass from color. Predict the first 2 seconds. The direction task is evaluated 1 second after release, not at terminal rest.", "task": "right_payload_vertical_direction_at_1_s"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_e9ccab9983c5713229c7764c.png", "id": "gf_e9ccab9983c5713229c7764c", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_be2469d8168f668e155c6e34", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_e9ccab9983c5713229c7764c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The precompressed passive spring piston launches the unbonded orange projectile into the free bar. The bar is not pinned. Use the accompanying shared physical conditions. Predict 6 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ea1b991af83a1aae15ebcfbf.png", "id": "gf_ea1b991af83a1aae15ebcfbf", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_d56dae75ef47dbb9e941667f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_ea1b991af83a1aae15ebcfbf.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_ea216f33e1a4a7963f8f81d7.png", "id": "gf_ea216f33e1a4a7963f8f81d7", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_da2cca522c94f5780710ecdb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_ea216f33e1a4a7963f8f81d7.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_ea36b5d29e93fcbb7104a71d.png", "id": "gf_ea36b5d29e93fcbb7104a71d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_6cf11f78acc3b69487869d36", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_ea36b5d29e93fcbb7104a71d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "A", "construction_subset": "household_development", "first_frame": "first_frames/gf_ea4df4717c57613a38bc9b01.png", "id": "gf_ea4df4717c57613a38bc9b01", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f6b0465f5372a99955e2119b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ea4df4717c57613a38bc9b01.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_ea6b4e82a1d52a6a90c6b649.png", "id": "gf_ea6b4e82a1d52a6a90c6b649", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_b822cf68892ed2875b2b1a65", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "straight", "reference_video": "references/gf_ea6b4e82a1d52a6a90c6b649.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_eadbeafe9a45113cdc86b31a.png", "id": "gf_eadbeafe9a45113cdc86b31a", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_e07bd19b2bb322449262ce3f", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_eadbeafe9a45113cdc86b31a.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_eadd5d486b912cee32524476.png", "id": "gf_eadd5d486b912cee32524476", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_bbfb3497f546e1d14b914431", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_eadd5d486b912cee32524476.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. Two solid blocks have the same uniform density and a mutual restitution coefficient of 0.72. Block-floor friction is 0.0028. The block on the ramp is released from rest and collides with the stationary block on the level floor. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "collision"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_eb49b7dd7425ed5aaf853810.png", "id": "gf_eb49b7dd7425ed5aaf853810", "observation_time_s": 2.166666666666667, "original_partition": "development", "pair_id": "pair_2a2c6dfe08177d66aff396bb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.2, "reference_fps": 30.0, "reference_label": "return", "reference_video": "references/gf_eb49b7dd7425ed5aaf853810.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.2 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_eb4ac6a5ff5b4ebe99762168.png", "id": "gf_eb4ac6a5ff5b4ebe99762168", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_670e23722baaf0d004ae9418", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_eb4ac6a5ff5b4ebe99762168.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_eb5914277ae8f7ac4e748c47.png", "id": "gf_eb5914277ae8f7ac4e748c47", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_6b8d3761e84675676e3b2f2d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_eb5914277ae8f7ac4e748c47.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_eb66515f54f2b36e7949914c.png", "id": "gf_eb66515f54f2b36e7949914c", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_00114f15de1f30ae4e381233", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_eb66515f54f2b36e7949914c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_eb70cfb5ceb9082638bd2bc5.png", "id": "gf_eb70cfb5ceb9082638bd2bc5", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_eb4cc35f644345b2267c5029", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_eb70cfb5ceb9082638bd2bc5.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_eb82edadaac9db8f6f5d663a.png", "id": "gf_eb82edadaac9db8f6f5d663a", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_7c3b2f0cb57aef2958559447", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_eb82edadaac9db8f6f5d663a.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_eb92e6b97ccb9aac51d4bf4b.png", "id": "gf_eb92e6b97ccb9aac51d4bf4b", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4b501d81604a6c280119d783", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_eb92e6b97ccb9aac51d4bf4b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "hill", "first_frame": "first_frames/gf_ec419fc75eb51ebdfb3f20fc.png", "id": "gf_ec419fc75eb51ebdfb3f20fc", "observation_time_s": 2.466666666666667, "original_partition": "development", "pair_id": "pair_3e82648710a31037aa2c270a", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_ec419fc75eb51ebdfb3f20fc.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the sphere under gravity on the track. Predict whether it crosses the central hill or returns before crossing. Continue for 2.5 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "sphere_hill_first_event"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ec5291d70eecfec5696f30aa.png", "id": "gf_ec5291d70eecfec5696f30aa", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_a1c409a1867cf38db299b57e", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ec5291d70eecfec5696f30aa.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ec7e8f512826a9ee650988c8.png", "id": "gf_ec7e8f512826a9ee650988c8", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_74fff546b9d7ea4fbe0d87d9", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ec7e8f512826a9ee650988c8.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ecad565108e200b99dfba082.png", "id": "gf_ecad565108e200b99dfba082", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_a5129c5ab550b5f65438cac0", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_ecad565108e200b99dfba082.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_ecaf0c81ea47e043e5ab3e3c.png", "id": "gf_ecaf0c81ea47e043e5ab3e3c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_df5f301a432d8f608fb3690d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_ecaf0c81ea47e043e5ab3e3c.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform solid orange spherical pendulum bob and a free blue rectangular target are initially at rest. The bob has radius 0.12 m and mass 1 kg. Its centre is 1 m from the ideal frictionless planar pivot, connected by a massless rigid suspension link. The free target is 0.24 m wide, 0.24 m deep and 1 m high, with mass 2 kg, resting on a horizontal floor. Release the bob under gravity (9.81 m/s^2). Contacts have zero friction and restitution; there are no motors, damping, people or external pushes. Continue their natural motion for 4 seconds at real-time speed, keeping the camera fixed. The target is free to move if contacted.", "task": "pendulum_first_swing_hits_target"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_ed4d0183a6c3441a1b0ebef6.png", "id": "gf_ed4d0183a6c3441a1b0ebef6", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_288660fa0d78baa187c7cbba", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ed4d0183a6c3441a1b0ebef6.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_ed7538cc3a157ec5ac926b70.png", "id": "gf_ed7538cc3a157ec5ac926b70", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_4bc5c4eafd7d21b8ab2b47c8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ed7538cc3a157ec5ac926b70.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_ed7aead5a35b5fc377302a97.png", "id": "gf_ed7aead5a35b5fc377302a97", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_f34aa2038f50a26384e7480d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_right", "reference_video": "references/gf_ed7aead5a35b5fc377302a97.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_ee41cd08d3c29b2f13df625e.png", "id": "gf_ee41cd08d3c29b2f13df625e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f743b9be5c7d05f55a9ccb6d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ee41cd08d3c29b2f13df625e.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_ee6307ffcda3e8edb41e7b3c.png", "id": "gf_ee6307ffcda3e8edb41e7b3c", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_119156d64450215f681969e0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_ee6307ffcda3e8edb41e7b3c.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["backward", "forward"], "category": "contact", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_eeb6ecf4b2e5706ab9c8ead5.png", "id": "gf_eeb6ecf4b2e5706ab9c8ead5", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f5546673551ba1c4d9cd55e4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_eeb6ecf4b2e5706ab9c8ead5.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the precompressed passive spring piston. The unbonded orange projectile can separate and strike the free wooden bar off-centre. The bar is not pinned. Continue6seconds, including impact and subsequent motion. Judge the projectile X direction immediately after its FIRST bar impact, not its final position. Visible bar width determines both mass and inertia at the common density.", "task": "projectile_x_direction_immediately_after_first_bar_impact"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_ef003f3404205e6d702894b8.png", "id": "gf_ef003f3404205e6d702894b8", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_745b656468b460f2bfbc7dc3", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_ef003f3404205e6d702894b8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_ef3d46789661bdb7c9578629.png", "id": "gf_ef3d46789661bdb7c9578629", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_426aaf0b0e8aa75a9868efa8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_ef3d46789661bdb7c9578629.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_f0214cbcc5c3797694277c92.png", "id": "gf_f0214cbcc5c3797694277c92", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_f514c76b329afbc93f7f8070", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_f0214cbcc5c3797694277c92.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_f04c0dcc157e6748918cb0e3.png", "id": "gf_f04c0dcc157e6748918cb0e3", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_4fe184b20b35777f6c686179", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_f04c0dcc157e6748918cb0e3.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_f05de153ecb9a34f8f5975ab.png", "id": "gf_f05de153ecb9a34f8f5975ab", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_da2ab1d75f76327fe936bdfe", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "hit", "reference_video": "references/gf_f05de153ecb9a34f8f5975ab.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_f088bd3df9b0e0e21f371c10.png", "id": "gf_f088bd3df9b0e0e21f371c10", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_4133e06ab9d5b6fd26b23440", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "retained", "reference_video": "references/gf_f088bd3df9b0e0e21f371c10.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the block on the inclined surface under gravity. It can contact and compress the finite passive spring piston, then may separate; it is not attached to the spring. Continue6seconds under the stated native contact friction and ideal spring/guide conditions. Determine whether block and piston separate after their first contact within the video window, not merely whether the initial frame has a gap. No terminal-rest requirement.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_f10544e3d34d91103e1ef3f3.png", "id": "gf_f10544e3d34d91103e1ef3f3", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_084ff66f9849065b062046cf", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left", "reference_video": "references/gf_f10544e3d34d91103e1ef3f3.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. Two uniform rectangular rigid rods are joined end to end by a frictionless hinge; the upper rod is hinged to the fixed support. Both rods are 0.65 m long, 0.04 m thick and 0.06 m deep, and each has mass 0.5 kg. They move in one vertical plane. Both are released from rest under gravity (9.81 m/s^2), without damping, motors, air resistance or external pushes. Continue their coupled motion for 4 seconds at real-time speed; keep the camera fixed.", "task": "upper_rod_horizontal_direction_at_0_2_s"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_f180a4b2bfd26589ea243053.png", "id": "gf_f180a4b2bfd26589ea243053", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_69428dd42069c7b4c4eba005", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_f180a4b2bfd26589ea243053.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["cross", "return"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_f1bbe6c649265f8d45e6e20e.png", "id": "gf_f1bbe6c649265f8d45e6e20e", "observation_time_s": 2.466666666666667, "original_partition": "train", "pair_id": "pair_59493ab659b22b475e0213ad", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.5, "reference_fps": 30.0, "reference_label": "cross", "reference_video": "references/gf_f1bbe6c649265f8d45e6e20e.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. The orange sphere is released from rest on the track. Motion is driven only by gravity. Contact is frictionless, with zero restitution. No hands, people, or subsequent external intervention. Continue at real-time speed. The camera remains fixed.", "task": "hill_first_event"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_f1be4f910f25880303ec6a64.png", "id": "gf_f1be4f910f25880303ec6a64", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_b2d4b98542d933087ef6e505", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_f1be4f910f25880303ec6a64.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the finite spherical pendulum under gravity with its massless rigid link and ideal hinge. The blue target is a free uniform box on a frictionless horizontal floor. Continue4seconds. Determine whether the pendulum sphere contacts the target within that observation window. Visible target height determines both target mass and inertia at the common density. No terminal-rest requirement.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_f1e705e021258e61bb16eed6.png", "id": "gf_f1e705e021258e61bb16eed6", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_ca7744fb3087472d7d4a7bfe", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_f1e705e021258e61bb16eed6.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_f26e197662915b863f460d5c.png", "id": "gf_f26e197662915b863f460d5c", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_38c9f995fb76b0d24a12056b", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_f26e197662915b863f460d5c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_f2e6f171321638bab0dd8d92.png", "id": "gf_f2e6f171321638bab0dd8d92", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_b20046867c4453ef3c520a5d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "released", "reference_video": "references/gf_f2e6f171321638bab0dd8d92.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A rigid lever with two equal attached weights is released from rest. The central axle and the stop under the left end remain fixed. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "lever"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_f3054977df31e39ce786f35a.png", "id": "gf_f3054977df31e39ce786f35a", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_e8938ffef5a1200bbd38d9d1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_left", "reference_video": "references/gf_f3054977df31e39ce786f35a.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["stable", "tipped_to_floor"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_f3935c1a862ae7bfbb8d99ad.png", "id": "gf_f3935c1a862ae7bfbb8d99ad", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_a8abac8ce4430d1c817a7cb6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped_to_floor", "reference_video": "references/gf_f3935c1a862ae7bfbb8d99ad.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_bridge_support"}
{"allowed_labels": ["roll_left", "roll_right"], "category": "torque", "condition": "B", "construction_subset": "mechanism_development", "first_frame": "first_frames/gf_f3ecf371803d9763bd274717.png", "id": "gf_f3ecf371803d9763bd274717", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_626c7229d1bc8db704dadae8", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "roll_left", "reference_video": "references/gf_f3ecf371803d9763bd274717.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. A wheel with a rigidly attached visible weight is released from rest on a level floor between guide rails. Motion follows gravity and physical contact, with no pushes or people. Realistic physics, real-time speed.", "task": "wheel"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_f40519308e4c3ec7790db40f.png", "id": "gf_f40519308e4c3ec7790db40f", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_ff3b8dce9c568102d98b98e5", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_f40519308e4c3ec7790db40f.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_f4ba319da65e02364d569332.png", "id": "gf_f4ba319da65e02364d569332", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_ab4ebe9767227637552a65f0", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "edge_rolling", "reference_video": "references/gf_f4ba319da65e02364d569332.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "pendulum_hit", "first_frame": "first_frames/gf_f4bb9f3af5334219e10236bd.png", "id": "gf_f4bb9f3af5334219e10236bd", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_d856c63684ff44858dac4e67", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_f4bb9f3af5334219e10236bd.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the pendulum. Predict whether it strikes and moves the target during the video. Continue for 4 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "pendulum_target_contact"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_f5a19e65aaacc36456a5516f.png", "id": "gf_f5a19e65aaacc36456a5516f", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_c79057800c85d25e56f1f047", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_f5a19e65aaacc36456a5516f.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_f60aa10c2a0b45d569a332cf.png", "id": "gf_f60aa10c2a0b45d569a332cf", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_a638dbe4fe2e966839875374", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "separate", "reference_video": "references/gf_f60aa10c2a0b45d569a332cf.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_f619291577b87b9ca236217c.png", "id": "gf_f619291577b87b9ca236217c", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_7c9350e91152fdb379c43423", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_f619291577b87b9ca236217c.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["collective_failure", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_f64652dbb831e995ba24091c.png", "id": "gf_f64652dbb831e995ba24091c", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f6b0465f5372a99955e2119b", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "collective_failure", "reference_video": "references/gf_f64652dbb831e995ba24091c.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_collective_stack_failure"}
{"allowed_labels": ["edge_rolling", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_f6d624351cfd27a28a1133b5.png", "id": "gf_f6d624351cfd27a28a1133b5", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_987e14c02aef173d4aef331f", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_f6d624351cfd27a28a1133b5.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "polygon_edge_rolling"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_f6f29a0351bafeb5a8a27bd2.png", "id": "gf_f6f29a0351bafeb5a8a27bd2", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_4315ec0be870b481e8d447d6", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_f6f29a0351bafeb5a8a27bd2.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "combined_pulley_equilibrium_or_motion"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_f73befbf435478785b3c7187.png", "id": "gf_f73befbf435478785b3c7187", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9130541fd8d7dc1e54fa8962", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_f73befbf435478785b3c7187.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["contact", "detached"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_f78bf49f691785b43054f08f.png", "id": "gf_f78bf49f691785b43054f08f", "observation_time_s": 0.4666666666666667, "original_partition": "development", "pair_id": "pair_206b4796dc8d14a22be9825c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 0.5, "reference_fps": 30.0, "reference_label": "contact", "reference_video": "references/gf_f78bf49f691785b43054f08f.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. A uniform rigid rectangular rod rests against a vertical wall and a horizontal floor. The rod is 1.6 m long, 0.05 m thick, 0.06 m deep and has mass 2 kg. It is released from rest under gravity (9.81 m/s^2). Both contacts are frictionless, restitution is zero, and there are no joints, people, external pushes or damping. The wall can push but cannot pull. Continue at real-time speed for 0.46666667 seconds after release. Keep the camera fixed.", "task": "wall_contact_at_specified_time"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_f7bb7837d265527612bce131.png", "id": "gf_f7bb7837d265527612bce131", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_4fe830e2eb4da86386747d56", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_f7bb7837d265527612bce131.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["left", "right"], "category": "torque", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_f804cb0c70a70e8085410c86.png", "id": "gf_f804cb0c70a70e8085410c86", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_1153bd47b51f9f89273163eb", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_f804cb0c70a70e8085410c86.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. All objects start at rest and are released under gravity (9.81 m/s^2). No motors, damping, hands or external pushes. Continue natural motion for 4 seconds at real-time speed; keep the camera fixed. Two uniform solid rods form a double pendulum with ideal frictionless planar hinges. Upper/lower rod lengths are [0.7, 0.6] m, masses [1.225, 1.05] kg, rectangular cross-section 0.05 by 0.07 m. Adjacent rods do not collide at their ideal joint.", "task": "upper_rod_horizontal_direction_at_0_2_s"}
{"allowed_labels": ["retained", "separated"], "category": "elastic", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_f88eb514b0d2207c47175702.png", "id": "gf_f88eb514b0d2207c47175702", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_a67ebba15d5c6c6bcf62ee40", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "separated", "reference_video": "references/gf_f88eb514b0d2207c47175702.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The apparatus is released from rest. Predict the motion under gravity, passive friction and stored spring energy, with no active drive or external push. The visible guides represent ideal translation constraints. Springs transmit force through the stated native finite-piston/stop mechanism; an unbonded block can separate. Use the common physical constants. Keep the camera fixed and use real-time speed.", "task": "block_piston_separation_within_video_window"}
{"allowed_labels": ["moving", "stationary"], "category": "elastic", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_f8e620ed55f7cffabd77785e.png", "id": "gf_f8e620ed55f7cffabd77785e", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_7c25aa2665aff7f5e7649bf0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_f8e620ed55f7cffabd77785e.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "ramp_spring_equilibrium_stationary_or_moving"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_f92de33994d684d6e3465a0d.png", "id": "gf_f92de33994d684d6e3465a0d", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_9aa2602fa29b85cf2169f8ed", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "moving", "reference_video": "references/gf_f92de33994d684d6e3465a0d.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_f95fca63b632d07af579bfee.png", "id": "gf_f95fca63b632d07af579bfee", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0d3a0b75080dbc38d6b5cfb1", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_f95fca63b632d07af579bfee.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["approach", "separate"], "category": "elastic", "condition": "B", "construction_subset": "ideal_spring", "first_frame": "first_frames/gf_f98993952fb8ef169cecc2b7.png", "id": "gf_f98993952fb8ef169cecc2b7", "observation_time_s": 0.1, "original_partition": "development", "pair_id": "pair_0e92c48a6813e252757e86c9", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "approach", "reference_video": "references/gf_f98993952fb8ef169cecc2b7.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The orange blocks are connected by a spring. The fixed gray reference behind them shows its natural length. Release the orange blocks. Predict their initial relative motion during the first 0.1 second. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "spring_initial_relative_motion"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_f991601edfcccb18b6274405.png", "id": "gf_f991601edfcccb18b6274405", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_0b1346b19a376fa29b01a4d7", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_f991601edfcccb18b6274405.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_f9e178f27cc7095c1cd087e4.png", "id": "gf_f9e178f27cc7095c1cd087e4", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_4edb993d61ae2f8adff0b125", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_f9e178f27cc7095c1cd087e4.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_fa5b1397ab04d2fd9c5f0f79.png", "id": "gf_fa5b1397ab04d2fd9c5f0f79", "observation_time_s": 3.966666666666667, "original_partition": "validation", "pair_id": "pair_e1e3af74e164bce018719182", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_fa5b1397ab04d2fd9c5f0f79.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["left_first", "middle_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_fa915053fb4adf97aabc32bf.png", "id": "gf_fa915053fb4adf97aabc32bf", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_ee67dfc992659817e6447506", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "right_first", "reference_video": "references/gf_fa915053fb4adf97aabc32bf.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. Three independent pendulums are released simultaneously under gravity. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "three_pendulums_first_bottom_crossing"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_fad323d39e363116ecdaa865.png", "id": "gf_fad323d39e363116ecdaa865", "observation_time_s": 5.966666666666667, "original_partition": "development", "pair_id": "pair_f7381de99ac6954868b2f118", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_fad323d39e363116ecdaa865.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_corner_overhang"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "static_moving_extension", "first_frame": "first_frames/gf_faf204c8e39740bbc5761fb8.png", "id": "gf_faf204c8e39740bbc5761fb8", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_747017b0835a1736a3838925", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_faf204c8e39740bbc5761fb8.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. The apparatus is released from rest. Predict its motion for four seconds under gravity, passive friction, the preloaded ideal Hooke spring, and an ideal massless inextensible rope. Use the accompanying physical conditions. The gray reference bar shows the natural spring length where present. No hands, active motors, or external pushes. Keep the camera fixed and use real-time speed.", "task": "spring_pulley_equilibrium_stationary_or_moving"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_fb148fd6423c31f99e1a2171.png", "id": "gf_fb148fd6423c31f99e1a2171", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_3aafab7e7e874212608d8c55", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "tipped", "reference_video": "references/gf_fb148fd6423c31f99e1a2171.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["moving", "stationary"], "category": "pulley", "condition": "B", "construction_subset": "pulley_equilibrium", "first_frame": "first_frames/gf_fb5579a4db5fb4981a6bcf60.png", "id": "gf_fb5579a4db5fb4981a6bcf60", "observation_time_s": 1.9666666666666666, "original_partition": "development", "pair_id": "pair_c66fc2404f9536232995dae4", "prompt_status": "source-delivery-prompt", "reference_duration_s": 2.0, "reference_fps": 30.0, "reference_label": "stationary", "reference_video": "references/gf_fb5579a4db5fb4981a6bcf60.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Release the visible loads from rest under gravity with the shared ideal taut massless inextensible no-slip rope, finite rotor inertia and passive bearing friction. Same-material weights share the stated density. Continue for 2 seconds at real-time speed, with unchanged camera, geometry and materials. No hands or active drive. Predict whether the loads stay stationary or move during the window.", "task": "atwood_equilibrium_or_motion"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_fc496437d0ed582218c38842.png", "id": "gf_fc496437d0ed582218c38842", "observation_time_s": 3.966666666666667, "original_partition": "test", "pair_id": "pair_a361803d2b924a10d60a2ffe", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_fc496437d0ed582218c38842.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "chair_tip"}
{"allowed_labels": ["held", "released"], "category": "torque", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_fce0367d318588cb49529bb6.png", "id": "gf_fce0367d318588cb49529bb6", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_89a01ad5c7dea43d4aa9b61c", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "held", "reference_video": "references/gf_fce0367d318588cb49529bb6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The loaded lever is released under gravity about its fixed hinge, with a passive stop on the left. Use the accompanying shared physical conditions. Predict 3 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "lever_release_under_gravity"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_fd427ca9ec0d9dcf8ab9f0eb.png", "id": "gf_fd427ca9ec0d9dcf8ab9f0eb", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_8073e6dbfafb1827e0d46b71", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_fd427ca9ec0d9dcf8ab9f0eb.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["left", "right"], "category": "contact", "condition": "B", "construction_subset": "mobile_springs", "first_frame": "first_frames/gf_fda68ed29b38d0fef39bedf6.png", "id": "gf_fda68ed29b38d0fef39bedf6", "observation_time_s": 0.2, "original_partition": "development", "pair_id": "pair_c2d80cba349338bc5e403cf0", "prompt_status": "source-delivery-prompt", "reference_duration_s": 6.0, "reference_fps": 30.0, "reference_label": "right", "reference_video": "references/gf_fda68ed29b38d0fef39bedf6.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. Release the connected blocks and freely moving spring frame from the displayed prepared state. Predict the frame direction at 0.2 second. Continue for 6 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "mobile_frame_direction_at_0p2s"}
{"allowed_labels": ["stable", "tipped"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_fda9f7153dfc2f2be5f90fa5.png", "id": "gf_fda9f7153dfc2f2be5f90fa5", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_0de6d5ac8ab06e3a0f9c9524", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "stable", "reference_video": "references/gf_fda9f7153dfc2f2be5f90fa5.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "slope_block"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "A", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_fdaaca1b0150cbe54d2886cb.png", "id": "gf_fdaaca1b0150cbe54d2886cb", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_1edd142a7febc990fad0cd6d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "rebound", "reference_video": "references/gf_fdaaca1b0150cbe54d2886cb.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}
{"allowed_labels": ["hit", "miss"], "category": "contact", "condition": "B", "construction_subset": "geometry_expansion_01", "first_frame": "first_frames/gf_fdd83acd4aca7d0caff4a67c.png", "id": "gf_fdd83acd4aca7d0caff4a67c", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_be1ef6bbebe70c7cda8e08bc", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "miss", "reference_video": "references/gf_fdd83acd4aca7d0caff4a67c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. All bodies start at rest in the supplied first frame. Keep camera, scene and materials unchanged. Use the shared physical conditions and real-time speed. No people, hands, active motors or external pushes. Release the finite spherical pendulum under gravity with its massless rigid link and ideal hinge. The blue target is a free uniform box on a frictionless horizontal floor. Continue4seconds. Determine whether the pendulum sphere contacts the target within that observation window. Visible target height determines both target mass and inertia at the common density. No terminal-rest requirement.", "task": "does_pendulum_hit_target"}
{"allowed_labels": ["left_first", "right_first"], "category": "gravity", "condition": "B", "construction_subset": "main", "first_frame": "first_frames/gf_fdd8556dbea47246367602df.png", "id": "gf_fdd8556dbea47246367602df", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_1363e16cfb1f875d9951f88e", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "left_first", "reference_video": "references/gf_fdd8556dbea47246367602df.mp4", "role": "paired_reference", "source_prompt": "A fixed camera shot. Three pendulums are released simultaneously from rest under gravity (9.81 m/s^2). Each bob is a uniform solid sphere of radius 0.08 m and mass 0.5 kg. The straight suspension links are massless and rigidly attached to their bobs, with ideal frictionless planar pivots; they remain taut. There is no air resistance, damping, motor or collision between bobs. Continue their natural motion for 4 seconds at real-time speed; keep the camera fixed.", "task": "which_pendulum_first_crosses_lowest_position"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_fde510aaffe8815a5c44f76b.png", "id": "gf_fde510aaffe8815a5c44f76b", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_58fcc412675a4812e7f2a2c8", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_fde510aaffe8815a5c44f76b.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["deflected", "straight"], "category": "contact", "condition": "B", "construction_subset": "balance_extension", "first_frame": "first_frames/gf_fe09d8a49f1bced885a41644.png", "id": "gf_fe09d8a49f1bced885a41644", "observation_time_s": 3.0, "original_partition": "development", "pair_id": "pair_92a406788e99d66e65c0fc31", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "deflected", "reference_video": "references/gf_fe09d8a49f1bced885a41644.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame with all bodies initially at rest. The orange sphere rolls down the ramp into the initially stationary blue sphere. Use the accompanying shared physical conditions. Predict 4 seconds of motion at real-time speed. Keep camera, scene and materials unchanged. No hands, active motors or external pushes.", "task": "target_transverse_deflection_at_3s"}
{"allowed_labels": ["fell", "stable"], "category": "support", "condition": "B", "construction_subset": "legacy_main", "first_frame": "first_frames/gf_fe4eef4a1040fd2a52738b04.png", "id": "gf_fe4eef4a1040fd2a52738b04", "observation_time_s": 3.966666666666667, "original_partition": "train", "pair_id": "pair_0e509928e0816a45e994cc34", "prompt_status": "release-video-adaptation-v1", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "fell", "reference_video": "references/gf_fe4eef4a1040fd2a52738b04.mp4", "role": "paired_reference", "source_prompt": "A uniform solid wooden object is released from rest under gravity. Predict its physical outcome within 4 seconds. Output one allowed label.", "task": "table_overhang"}
{"allowed_labels": ["collapsed", "stable"], "category": "support", "condition": "B", "construction_subset": "household_development", "first_frame": "first_frames/gf_fe8bfb2f20ec28aeb567c80b.png", "id": "gf_fe8bfb2f20ec28aeb567c80b", "observation_time_s": 3.966666666666667, "original_partition": "development", "pair_id": "pair_b85bf2aa069a0552191fcced", "prompt_status": "source-delivery-prompt", "reference_duration_s": 4.0, "reference_fps": 30.0, "reference_label": "collapsed", "reference_video": "references/gf_fe8bfb2f20ec28aeb567c80b.mp4", "role": "paired_reference", "source_prompt": "A fixed, static camera shot. The loose foreground objects are released from rest. Furniture and background remain fixed. Motion is governed by gravity and contact forces. No people, no pushes or pulls, no camera movement. Real-time speed.", "task": "household_top_stack_failure"}
{"allowed_labels": ["forward", "rebound"], "category": "contact", "condition": "B", "construction_subset": "slider_collision", "first_frame": "first_frames/gf_fef4d82a6188d51029884d8c.png", "id": "gf_fef4d82a6188d51029884d8c", "observation_time_s": 2.966666666666667, "original_partition": "development", "pair_id": "pair_1edd142a7febc990fad0cd6d", "prompt_status": "source-delivery-prompt", "reference_duration_s": 3.0, "reference_fps": 30.0, "reference_label": "forward", "reference_video": "references/gf_fef4d82a6188d51029884d8c.mp4", "role": "paired_reference", "source_prompt": "A fixed static camera shot. Start from the supplied first frame and use the shared physical conditions. The incoming block descends the visible ramp under gravity and collides with the target. Both blocks follow the stated ideal passive guides. Predict whether the incoming block continues forward or rebounds immediately after collision. Continue for 3 seconds at real-time speed. Keep the camera, geometry and materials unchanged. No hands, people, motors or further intervention.", "task": "slider_post_impact_direction"}