{
  "id": "conflict_update",
  "description": "同一属性先给旧值再给新值；跨会话询问时必须返回新值，且旧值不得作为 active 事实被读取。",
  "sessions": [
    {
      "id": "s1",
      "turns": [
        "记一下：我的默认语言是 日语。",
        "更正一下：我的默认语言改成 葡萄牙语，日语作废。"
      ]
    },
    {
      "id": "s2",
      "turns": [
        "我的默认语言是什么？只回答语言名。"
      ]
    }
  ],
  "assertions": [
    { "type": "answer_contains", "session": "s2", "turn": 0, "any": ["葡萄牙语", "葡萄牙"] },
    { "type": "answer_not_contains", "session": "s2", "turn": 0, "any": ["日语"] },
    { "type": "active_record_contains", "any": ["葡萄牙语"] }
  ]
}