{
 "id": "B16-A",
 "counterpart": "B16-B",
 "genre": "shopkeeping",
 "interaction_family": "trigger_mechanism",
 "initial_scene": {
  "description": "a shop interior behind the counter, a large floor pedal in its raised position, a big shelf pushed flush into the back wall, and a hanging shop sign that is dark and unlit a single shopkeeper seen in third person from behind, standing in place behind the counter beside the pedal",
  "third_person_player": true,
  "player_pose_and_item": "a single shopkeeper seen in third person from behind, standing in place behind the counter beside the pedal",
  "action_target": "the large floor pedal",
  "other_key_objects": [
   "floor_pedal",
   "back_shelf",
   "shop_sign"
  ],
  "shared_visual_state": [
   "the big shelf is pushed flush into the wall",
   "the hanging shop sign is dark and unlit"
  ],
  "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/B16.png"
 },
 "hidden_state": {
  "variable": "shop_mode",
  "A": "SHELF",
  "B": "SIGN",
  "visible_in_initial_frame": false
 },
 "rule": {
  "text": "If the shop_mode is SHELF, the big shelf slides out toward the front; if it is SIGN, the shop sign glows bright yellow.",
  "precondition": "shop_mode == 'SHELF'",
  "effect": "shelf.out = true",
  "else_effect": "sign.yellow = true",
  "mapping": {
   "SHELF": "shelf.out = true",
   "SIGN": "sign.yellow = true"
  }
 },
 "shared_action": "The player stays in place and presses the large floor pedal down.",
 "instruction": "Preserve the first frame. shop_mode = SHELF, so the resolved rule is: the big shelf slides out toward the front. Action: The player stays in place and presses the large floor pedal down. Show the action, then exactly this consequence: the big shelf slides out toward the front The counter-outcome must NOT happen at any point: the hanging shop sign glows bright yellow. Instead, the hanging shop sign is dark and unlit 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": {
  "shelf": {
   "out": false
  },
  "sign": {
   "yellow": false
  },
  "shop_mode": "SHELF"
 },
 "gold_end_state": {
  "shelf.out": true,
  "sign.yellow": false
 },
 "delta": {
  "shelf.out": true
 },
 "visual_vocab": {
  "shelf.out": {
   "false": "the big shelf is pushed flush into the wall",
   "true": "the big shelf is slid out toward the front"
  },
  "sign.yellow": {
   "false": "the hanging shop sign is dark and unlit",
   "true": "the hanging shop sign glows bright yellow"
  }
 },
 "gold_A": "the big shelf slides out toward the front",
 "gold_B": "the shop sign glows bright yellow",
 "terminal_visual_states": {
  "occurs": {
   "variable": "shelf.out",
   "value": true,
   "phrase": "the big shelf is slid out toward the front",
   "judge_label": "the shelf is out",
   "in_final_frame": true
  },
  "not_occurs": {
   "variable": "sign.yellow",
   "value": true,
   "phrase": "the hanging shop sign glows bright yellow",
   "judge_label": "the sign glows yellow",
   "in_final_frame": false,
   "instead_remains": "the hanging shop sign is dark and unlit"
  }
 },
 "prompt_ok": [
  "SHELF",
  "SIGN"
 ],
 "judge": {
  "initial_questions": [
   {
    "question": "Is it true that the player stands beside the floor pedal?",
    "statement": "the player stands beside the floor pedal",
    "answers": [
     "yes",
     "no"
    ],
    "expected": "yes"
   },
   {
    "question": "Is it true that the shelf is flush in the wall and the sign is unlit?",
    "statement": "the shelf is flush in the wall and the sign is unlit",
    "answers": [
     "yes",
     "no"
    ],
    "expected": "yes"
   }
  ],
  "action_question": {
   "question": "Was the large floor pedal pressed down?",
   "answers": [
    "yes",
    "no"
   ],
   "expected": "yes"
  },
  "outcome_question": {
   "question": "At the end, is the shelf slid out, or the sign glowing yellow?",
   "answers": [
    "the shelf is out",
    "the sign glows yellow",
    "unclear"
   ],
   "expected": "the shelf is out",
   "not_expected": "the sign glows yellow"
  }
 },
 "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"
}