{
  "id": "multi_hop_chain",
  "description": "两条事实构成推理链（项目→负责人→工号）。跨会话问最终属性时，模型必须串起两跳而不是只取一跳。",
  "sessions": [
    {
      "id": "s1",
      "turns": [
        "记两件事：项目 项目-星尘 的负责人是 成员-林澈。",
        "另外：成员 成员-林澈 的工号是 H-9F3K2。"
      ]
    },
    {
      "id": "s2",
      "turns": [
        "项目-星尘 的负责人的工号是什么？需要的话可以分步推导，最后只回答工号。"
      ]
    }
  ],
  "assertions": [
    { "type": "answer_contains", "session": "s2", "turn": 0, "any": ["H-9F3K2", "H 9F3K2", "9F3K2"] },
    { "type": "answer_not_contains", "session": "s2", "turn": 0, "any": ["不知道", "没有记录"] }
  ]
}