{
  "schemaVersion": 1,
  "slug": "index-finger-extend-and-retract",
  "ownerPath": "/templates/index-finger-extend-and-retract",
  "sourceClass": "original-authored-task-with-deterministic-input",
  "demandType": "independent-product-lookup-value",
  "historicalExactQuery": null,
  "exactQueryVolume": null,
  "brief": {
    "en": "Isolate a single-digit change: one index finger uncurls from a loose fist, pauses, and folds back. Keep the thumb and three other fingers in the original closed group. The purpose is distinguishing a selected digit from a whole-hand opening.",
    "zh": "把变化限制在单一手指：食指从松拳中展开、停留，再折回。拇指和另外三指保留原来的收拢状态，重点区分选定手指与整手张开。"
  },
  "phases": {
    "en": [
      "Fist: the index knuckle is identifiable beside the thumb side.",
      "Uncurl: that finger extends while the other three remain folded.",
      "Point: one extended finger holds, with its root attached to the same hand.",
      "Return: the same finger folds back into the original loose-fist group."
    ],
    "zh": [
      "松拳：食指指节在拇指旁可辨认。",
      "展开：该指伸出，另外三指仍弯曲。",
      "停留：只有一指伸直，根部仍接在原手上。",
      "收回：同一食指折回原松拳指节组。"
    ]
  },
  "acceptance": {
    "en": [
      "The index starts as part of the original folded hand.",
      "Only the selected index finger extends.",
      "Three other non-thumb fingers stay curled without vanishing.",
      "The thumb remains a separate coherent part of the hand.",
      "The extended finger connects continuously to its original root.",
      "The same finger folds back; no duplicate, deletion or full-hand opening occurs."
    ],
    "zh": [
      "食指起初属于原有折叠手形。",
      "只有指定食指伸出。",
      "其余三根非拇指仍收拢且没有消失。",
      "拇指仍是单独连贯的结构。",
      "伸直食指连续连接原根部。",
      "同一食指折回，没有复制、删除或整手展开。"
    ]
  },
  "h3Tested": false,
  "generatedOutput": null,
  "realPersonUsed": false
}