{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Triplet",
  "description": "知識圖譜三元組：Subject > Predicate > Object",
  "type": "object",
  "required": ["subject", "predicate", "object"],
  "properties": {
    "subject": {
      "type": "string",
      "minLength": 1,
      "description": "主詞（實體名稱）"
    },
    "predicate": {
      "type": "string",
      "minLength": 1,
      "description": "謂詞（關係類型）"
    },
    "object": {
      "type": "string",
      "minLength": 1,
      "description": "受詞（目標實體或值）"
    },
    "source_block_id": {
      "type": "string",
      "description": "來源 Block ID（Logseq 對應）"
    },
    "confidence": {
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "default": 1.0,
      "description": "可信度（0-1）"
    }
  }
}