{
  "id": "forget_retraction",
  "description": "写入事实后明确要求遗忘；跨会话再问时必须不再使用该事实（撤回/覆盖语义），且不得把已忘内容当现状。",
  "sessions": [
    {
      "id": "s1",
      "turns": [
        "记一下：我的紧急联系人是 王工，电话分机 7781。"
      ]
    },
    {
      "id": "s2",
      "turns": [
        "请遗忘我的紧急联系人信息，不要再保留和使用它。"
      ]
    },
    {
      "id": "s3",
      "turns": [
        "我的紧急联系人分机是多少？如果已经不保留这条信息，就直接说明。"
      ]
    }
  ],
  "assertions": [
    { "type": "answer_not_contains", "session": "s3", "turn": 0, "any": ["7781"] },
    { "type": "answer_contains", "session": "s3", "turn": 0, "any": ["没有", "不知道", "已", "无法确认", "未保留"] }
  ]
}