{
  "schema_version": 1,
  "concept_key": "one",
  "concept_type": "quantity",
  "category": "quantity",
  "semantic_intent": "language_independent_concept_definition",
  "meaning": "A quantity set containing exactly one target item.",
  "counts_as": [
    "a clearly bounded comparison or reference set",
    "different object types and spatial arrangements",
    "examples where quantity is not cued by colour or position"
  ],
  "does_not_count_as": [
    "more",
    "all",
    "none",
    "an ambiguous or substantially hidden example of one",
    "a written word, icon or logo without a meaningful exemplar",
    "a scene where position, colour, size or background reveals the answer"
  ],
  "relations": [
    {
      "type": "member_of_group",
      "target_key": "quantities"
    },
    {
      "type": "commonly_confused_with",
      "target_key": "more"
    },
    {
      "type": "commonly_confused_with",
      "target_key": "all"
    },
    {
      "type": "commonly_confused_with",
      "target_key": "none"
    }
  ],
  "distractor_rules": {
    "level_1_clear_contrast": {
      "candidates": [
        "apple",
        "banana",
        "orange_fruit"
      ],
      "rule": "Use visually and semantically unrelated choices; match size, crop, background and salience."
    },
    "level_2_near_contrast": {
      "candidates": [
        "more",
        "all",
        "none"
      ],
      "rule": "Introduce same-category or functionally similar choices only after clear-contrast success."
    },
    "level_3_advanced": {
      "rule": "Use novel exemplars, richer contexts and balanced positions; remove colour, scale, actor, container and background shortcuts."
    },
    "prohibited_cues": [
      "target always in the same position",
      "target uniquely larger or brighter",
      "written label reveals answer",
      "only target has audio or animation",
      "distractor is unsafe, frightening or culturally demeaning"
    ]
  },
  "ambiguity_controls": [
    "teach meaning before labels",
    "vary irrelevant visual features",
    "require at least two exemplars before mastery",
    "score prompts separately from correctness",
    "probe with an unseen exemplar"
  ],
  "safety_and_cultural_notes": [
    "Use safe everyday contexts, respectful representation and culturally familiar alternatives; avoid stereotypes and coercion.",
    "Localize from semantic intent rather than translating the English label literally.",
    "Clinical and native-language/cultural review are required before approval."
  ],
  "review": {
    "status": "draft_needs_slp_and_cultural_review",
    "required_reviewers": [
      "speech_language_professional",
      "accessibility_reviewer",
      "native_language_or_cultural_reviewer"
    ]
  }
}