{
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    {
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          "notes": "",
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          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
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          "observation_id": "observation-emigrant-completion-box-springs-chain-lakes-distance-mileage",
          "observed_at": null,
          "observer": "Wayproof primary-source, map and source-feature review",
          "retrieved_at": "2026-10-06T20:36:35+00:00",
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        }
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  ],
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    {
      "action": "ADD",
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      "knowledge_gap_refs": [],
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      "record_type": "claim",
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  ],
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    "previous_id": "claim-emigrant-completion-box-springs-chain-lakes-conditions",
    "total": 3965
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    {
      "artifact_refs": [],
      "content": "The June 2012 mileage table reports 2.5 miles for Box Springs to Chain Lakes; precise endpoint/parking inclusion is not established.",
      "observation_id": "observation-emigrant-completion-box-springs-chain-lakes-distance-mileage",
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