{
 "id": "B13-A",
 "counterpart": "B13-B",
 "genre": "farming",
 "interaction_family": "trigger_mechanism",
 "initial_scene": {
  "description": "a field headgate in flat morning light, a large metal irrigation valve wheel on a pipe, a greenhouse with its door shut, and a barn lantern hanging unlit on a post beside the gate a single farmer seen in third person from behind, standing in place at the valve with both hands on the wheel",
  "third_person_player": true,
  "player_pose_and_item": "a single farmer seen in third person from behind, standing in place at the valve with both hands on the wheel",
  "action_target": "the large irrigation valve",
  "other_key_objects": [
   "irrigation_valve",
   "greenhouse",
   "barn_lantern"
  ],
  "shared_visual_state": [
   "the greenhouse door is shut",
   "the barn lantern hangs unlit with dark dead glass"
  ],
  "camera": "locked third-person, fixed framing",
  "style": "stylized 3D third-person adventure game environment, clean uncluttered composition, readable silhouettes, medium-wide fixed gameplay camera, soft cool-neutral ambient lighting, restrained materials, no HUD, no subtitles, no readable text",
  "keyframe": "frames/B13.png"
 },
 "hidden_state": {
  "variable": "irrigation_mode",
  "A": "DOOR",
  "B": "LANTERN",
  "visible_in_initial_frame": false
 },
 "rule": {
  "text": "If the irrigation_mode is DOOR, the greenhouse door swings wide open; if it is LANTERN, the barn lantern bursts into warm yellow light.",
  "precondition": "irrigation_mode == 'DOOR'",
  "effect": "greenhouse.open = true",
  "else_effect": "lantern.lit = true",
  "mapping": {
   "DOOR": "greenhouse.open = true",
   "LANTERN": "lantern.lit = true"
  }
 },
 "shared_action": "The large irrigation valve clearly rotates by about ninety degrees.",
 "instruction": "Preserve the first frame. irrigation_mode = DOOR, so the resolved rule is: the greenhouse door swings wide open. Action: The large irrigation valve clearly rotates by about ninety degrees. Show the action, then exactly this consequence: the greenhouse door swings wide open The counter-outcome must NOT happen at any point: the barn lantern burns with a bright warm yellow flame. Instead, the barn lantern hangs unlit with dark dead glass throughout the clip. Hold the final state for about the last second. One continuous 3-second third-person clip, fixed camera, no HUD, no subtitles, no readable text.",
 "initial_state": {
  "greenhouse": {
   "open": false
  },
  "lantern": {
   "lit": false
  },
  "irrigation_mode": "DOOR"
 },
 "gold_end_state": {
  "greenhouse.open": true,
  "lantern.lit": false
 },
 "delta": {
  "greenhouse.open": true
 },
 "visual_vocab": {
  "greenhouse.open": {
   "false": "the greenhouse door is shut",
   "true": "the greenhouse door is wide open"
  },
  "lantern.lit": {
   "false": "the barn lantern hangs unlit with dark dead glass",
   "true": "the barn lantern burns with a bright warm yellow flame"
  }
 },
 "gold_A": "the greenhouse door swings wide open",
 "gold_B": "the barn lantern bursts into warm yellow light",
 "terminal_visual_states": {
  "occurs": {
   "variable": "greenhouse.open",
   "value": true,
   "phrase": "the greenhouse door is wide open",
   "judge_label": "the greenhouse door is open",
   "in_final_frame": true
  },
  "not_occurs": {
   "variable": "lantern.lit",
   "value": true,
   "phrase": "the barn lantern burns with a bright warm yellow flame",
   "judge_label": "the barn lantern is lit",
   "in_final_frame": false,
   "instead_remains": "the barn lantern hangs unlit with dark dead glass"
  }
 },
 "prompt_ok": [
  "DOOR",
  "LANTERN"
 ],
 "judge": {
  "initial_questions": [
   {
    "question": "Is it true that the player stands with both hands on the valve wheel?",
    "statement": "the player stands with both hands on the valve wheel",
    "answers": [
     "yes",
     "no"
    ],
    "expected": "yes"
   },
   {
    "question": "Is it true that the greenhouse door is shut and the barn lantern is unlit?",
    "statement": "the greenhouse door is shut and the barn lantern is unlit",
    "answers": [
     "yes",
     "no"
    ],
    "expected": "yes"
   }
  ],
  "action_question": {
   "question": "Did the large valve clearly rotate?",
   "answers": [
    "yes",
    "no"
   ],
   "expected": "yes"
  },
  "outcome_question": {
   "question": "At the end, is the greenhouse door open, or the barn lantern lit?",
   "answers": [
    "the greenhouse door is open",
    "the barn lantern is lit",
    "unclear"
   ],
   "expected": "the greenhouse door is open",
   "not_expected": "the barn lantern is lit"
  }
 },
 "constraints": {
  "identical_initial_frame": true,
  "hidden_state_not_visually_leaked": true,
  "same_action_across_twins": true,
  "both_outcomes_change": true,
  "one_action_per_chunk": true,
  "duration_seconds": "2-5"
 },
 "input_image": "input.png"
}