{
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    {
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        "claim_id": "claim-keller-water-quality-20260922",
        "evidence_ids": [
          "evidence-keller-water-quality-20260922"
        ],
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          "starts_on": null
        },
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        }
      },
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        {
          "claim_id": "claim-keller-water-quality-20260922",
          "evidence_id": "evidence-keller-water-quality-20260922",
          "notes": "Volatile official status; recheck before water contact or travel.",
          "observation_id": "observation-ebrpd-current-water-quality-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Water Quality Notices table"
          ],
          "content": "The live Current Water Quality Conditions table reported the location-specific advisory states represented by the associated claims.",
          "observation_id": "observation-ebrpd-current-water-quality-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T21:00:00+00:00",
          "source_id": "source-ebrpd-current-water-quality"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-current-water-quality"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "beach-keller",
      "kind": "swim_beach",
      "name": "Keller Beach"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260922-ebrpd-water-status-matrix",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-keller-water-quality-20260922.json",
      "reason": "Materialize a distinct monitored water location or its volatile official status.",
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      "record_type": "claim",
      "summary": "Materialize the current EBRPD water-quality status matrix by monitored location."
    }
  ],
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    "previous_id": "claim-june-lakes-wilderness-context",
    "total": 3965
  },
  "observations": [
    {
      "artifact_refs": [
        "Water Quality Notices table"
      ],
      "content": "The live Current Water Quality Conditions table reported the location-specific advisory states represented by the associated claims.",
      "observation_id": "observation-ebrpd-current-water-quality-20260922",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-22T21:00:00+00:00",
      "source_id": "source-ebrpd-current-water-quality"
    }
  ],
  "record": {
    "claim_id": "claim-keller-water-quality-20260922",
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      "evidence-keller-water-quality-20260922"
    ],
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  "sources": [
    {
      "locator": "https://www.ebparks.org/natural-resources/water-quality",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-current-water-quality"
    }
  ]
}