{
  "task_id": "waterquality_004",
  "domain": "WATER_QUALITY_PORTAL",
  "autonomy_type": "ordered table",
  "oracle_output_cardinality": 3,
  "instruction": "我在核对 Trinity River 主河道上以 FM 85 附近河段为上游端、以 Interstate 10 附近河段为下游端的 1993–2001 年有毒污染物相关水质监测资料，想沿河为上游、中游和下游三段各选一处 TCEQ 长期对照站。\n请以 Trinity River 主河道在 FM 85 附近河段至 Interstate 10 附近河段之间的范围为起点，沿河分别在上游、中游和下游三段筛选候选监测位置；只保留站点记录中标注为 River/Stream，且站名仍对应 Trinity River 主干、而不是其他命名水体或分汊的监测位置。随后核对这些站点的记录类别，保留六类记录均覆盖 1993–2001 年的站点（具体指起始年不晚于 1993 且结束年不早于 2001），并按上游到下游输出结果。\n最后，请沿河流方向从上游到下游列出三行，每行格式为：<HUC>|<MonitoringLocationIdentifier>|<六类同时具备的最早年份>|<Inorganics, Major, Non-metals起始年>|<Microbiological起始年>|<Nutrient起始年>|<Organics, Other起始年>|<Organics, PCBs起始年>|<Physical起始年>。",
  "start_url": "https://www.waterqualitydata.us/",
  "output_format": "请沿河流方向从上游到下游列出三行，每行格式为：<HUC>|<MonitoringLocationIdentifier>|<六类同时具备的最早年份>|<Inorganics, Major, Non-metals起始年>|<Microbiological起始年>|<Nutrient起始年>|<Organics, Other起始年>|<Organics, PCBs起始年>|<Physical起始年>。",
  "oracle_answer": "12030105|TCEQMAIN-10924|1983|1982|1983|1982|1983|1983|1982\n12030202|TCEQMAIN-10897|1993|1969|1972|1972|1993|1974|1969\n12030203|TCEQMAIN-10892|1976|1969|1971|1972|1974|1976|1969",
  "metadata": {
    "State-Gated Retrieval": [
      "只在 Trinity River 主干语义成立的候选站中筛选，并要求 6 个 Characteristic Group 都覆盖 1993-2001。",
      "必须把六个组别拆开检索并按站点 ID 扇入，再在 detail page 核验 full-window coverage 与 legacy toxics 组别完整性。",
      "最终每个目标分区只保留满足全部组别要求且共同起始年最优的站。"
    ],
    "dependency_type": "Data + Control",
    "intra_chain": true,
    "inter_chain": true,
    "data_dependency": [
      "Trinity River mainstem candidate stations are generated from the target HUC branches and six characteristic-group searches",
      "detail pages yield River/Stream validity, 1993-2001 full-window coverage, and the group-specific start years needed for ranking",
      "final rows are produced only after six-group fan-in and detail-page validation remove partial-group and non-mainstem false positives"
    ],
    "control_dependency": [
      "each of the six characteristic groups must be evaluated separately and intersected by station ID before a multi-select hit can be retained",
      "station names and River/Stream tags are insufficient until the detail page confirms Trinity mainstem semantics and 1993-2001 full-window coverage",
      "candidate rejection and final ranking must be determined after applying the PCBs / Organics, Other gap checks"
    ],
    "freeze": {
      "historical_window": "Trinity River mainstem stations validated against six characteristic groups over 1993-2001, with ranking based on the earliest joint availability and group start years"
    },
    "answer_type": "multi-row ordered table"
  },
  "rubric": {
    "inclusion_conditions": [
      "只在 Trinity River 主干语义成立的候选站中筛选，并要求 6 个 Characteristic Group 都覆盖 1993-2001。",
      "必须把六个组别拆开检索并按站点 ID 扇入，再在 detail page 核验 full-window coverage 与 legacy toxics 组别完整性。",
      "最终每个目标分区只保留满足全部组别要求且共同起始年最优的站。"
    ],
    "exclusion_conditions": [
      "排除把 Characteristic Group 多选误当成同时满足的浅层结果。",
      "排除只看站名和 River/Stream，不核验 1993-2001 全窗口覆盖的结果。",
      "排除忽略 PCBs 或 Organics, Other 缺失的站点。"
    ],
    "normalization": {
      "field_separator": "|",
      "record_separator": "\n",
      "header_row": "omit the header row; emit data rows only",
      "schema": [
        "HUC",
        "MonitoringLocationIdentifier",
        "common_start_year",
        "Inorganics_start",
        "Microbiological_start",
        "Nutrient_start",
        "Organics_Other_start",
        "Organics_PCBs_start",
        "Physical_start"
      ],
      "HUC": "preserve the HUC exactly as emitted in the source result",
      "MonitoringLocationIdentifier": "preserve the monitoring-location identifier exactly, for example `TCEQMAIN-10924`",
      "common_start_year": "emit the maximum of the six per-group start years",
      "selection_rule": "only keep mainstem river/stream sites whose six required groups all cover the target window",
      "sorting_or_selection": "upstream to downstream along the mainstem"
    }
  }
}