Add Leaderboard video-generation first-frame assets (batch 199/303)

.gitattributes

@@ -20548,3 +20548,75 @@ Leaderboard/Video[[:space:]]Generation/SinglePhysics/FixedArrayRedirect__bg299__
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Leaderboard/Video Generation/SinglePhysics/FixedArrayRedirect__bg299__sGgU6e_trajectory/caption.txt

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+A red laser beam originates from a light source and impinges upon the first elliptical mirror. It reflects toward the second elliptical mirror such that the angle of reflection equals the angle of incidence. The beam undergoes secondary reflection on the second mirror surface, maintaining a rectilinear propagation path. All interfaces strictly conform to the law of reflection. Light propagates strictly along defined vectors between the two mirrors without deviation.

Leaderboard/Video Generation/TriplePhysics/BalloonTether_BalloonLift_DoublePendulum__bg222__2sgnag_trajectory/caption.txt

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+A blue sphere suspended from a golden chain descends, pulling a golden bell downward until rope tension increases. The coupled system undergoes constrained pendulum oscillation under gravitational acceleration. At the swing extremum, the assembly collides with a salmon-colored cylinder, transferring horizontal momentum to displace it and reveal two balloons below. The yellow balloon tethered at the bottom rises vertically under buoyancy until the rope is fully extended. Simultaneously, the green balloon ascends freely due to net upward buoyancy, lifting a red reflective canister attached to its base.

Leaderboard/Video Generation/TriplePhysics/BalloonTether_BalloonLift_DoublePendulum__bg222__4RG38k_trajectory/caption.txt

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+An orange plastic sphere suspended from a chain descends under gravity, pulling a purple reflective bell downward until the linkage becomes taut. The coupled system undergoes constrained pendulum oscillation. At the swing's amplitude extremum, the bell collides with a salmon-colored rectangular suitcase, inducing horizontal displacement that reveals two concealed balloons below. A grey brick-shaped tethered balloon ascends vertically due to buoyancy until the tether is fully extended. Concurrently, a light-colored tethered balloon rises, elevating a copper can attached to its bottom via net upward buoyancy.

Leaderboard/Video Generation/TriplePhysics/BalloonTether_BalloonLift_DoublePendulum__bg222__6ORHyb_trajectory/caption.txt

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+A yellow low-density plastic sphere, suspended by a chain, descends under gravitational acceleration, pulling a silver reflective bell downward until the chain becomes taut. The coupled system oscillates as a constrained pendulum. At the oscillation extremum, the bell collides with a salmon-colored rectangular briefcase, displacing it from an orange dimpled box onto a rough surface, exposing two concealed balloons. A white pebble-textured tethered balloon ascends vertically under buoyant force until its tether achieves full extension; concurrently, a gold tethered balloon ascends freely under net upward buoyancy, elevating a blue embossed can affixed to its base.

Leaderboard/Video Generation/TriplePhysics/BalloonTether_BalloonLift_DoublePendulum__bg222__7yQ0N6_trajectory/caption.txt

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+A yellow low-density plastic sphere suspended by a gold chain accelerates downward under gravity, pulling the gold bell downward until the chain becomes taut. The coupled system undergoes constrained pendulum oscillation. At the swing extremum, the gold bell collides with a green-yellow rectangular briefcase, causing horizontal displacement and revealing two balloons previously obscured. A red wooden tethered balloon rises vertically under buoyancy until the tether is fully extended and taut; simultaneously, a red plastic balloon ascends freely under net upward buoyancy, suspending an aluminum can connected to its bottom end.

Leaderboard/Video Generation/TriplePhysics/BalloonTether_BalloonLift_DoublePendulum__bg222__CL4l8U_trajectory/caption.txt

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+A blue sphere suspended by a gold chain descends, pulling a silver bell downward until the connection becomes taut. The coupled system oscillates as a constrained pendulum, subsequently colliding with a salmon-colored suitcase. The impact causes horizontal displacement of the suitcase, revealing two hidden balloons beneath. A light brown tethered balloon ascends vertically under buoyancy until the rope fully extends; simultaneously, a red balloon rises, lifting an aluminum can attached to its base.

Leaderboard/Video Generation/TriplePhysics/BalloonTether_BalloonLift_DoublePendulum__bg222__MKNvHC_trajectory/caption.txt

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+A red plastic sphere suspended from a chain descends under gravitational acceleration, pulling a reddish-brown reflective bell downward until the chain links become taut. The coupled system oscillates as a constrained pendulum. At the extreme position, the bell collides with a teal suitcase, transferring horizontal momentum to cause displacement, exposing two hidden balloons. The orange tethered balloon ascends vertically under buoyancy until the tether is fully extended; simultaneously, the yellow-green balloon ascends freely under net upward buoyancy, elevating the silver canister attached to its base.

Leaderboard/Video Generation/TriplePhysics/BalloonTether_BalloonLift_DoublePendulum__bg222__P2aD7J_trajectory/caption.txt

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+No Chinese physics narrative text was provided in the input stream. Processing requires source material to maintain absolute physics fidelity and strict style alignment throughout the translation procedure. Event sequences and causal logic cannot be preserved accurately without the original content. Please provide the complete physics scenario text to enable translation.

Leaderboard/Video Generation/TriplePhysics/BalloonTether_BalloonLift_DoublePendulum__bg222__Qvlsr4_trajectory/caption.txt

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+An orange plastic sphere suspended on a chain descends under gravitational acceleration, drawing an aluminum bell until the chain becomes taut. The coupled system exhibits constrained pendulum oscillation. At the swing extremum, the bell collides with a red rectangular suitcase, transferring horizontal momentum to induce displacement, thereby revealing two balloons previously obscured below. A mottled, rough-textured grey tethered balloon ascends vertically under buoyancy, its tether fully extended and taut; simultaneously, a red tethered balloon rises under net upward buoyancy, lifting a darker metal can affixed at its base.