{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-del-valle-campground-inventory",
        "evidence_ids": [
          "evidence-del-valle-campground-inventory",
          "evidence-del-valle-ebrpd-campground-inventory",
          "evidence-del-valle-camping-current-inventory"
        ],
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        "spatial_scope_ids": [
          "scope-del-valle-family-campground"
        ],
        "subject_id": "campground-del-valle-family",
        "temporal_scope": null,
        "value": {
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          "drive_up_tent": 124,
          "rv_full_hookup": 21,
          "total": 150
        }
      },
      "evidence": [
        {
          "claim_id": "claim-del-valle-campground-inventory",
          "evidence_id": "evidence-del-valle-campground-inventory",
          "notes": "",
          "observation_id": "observation-del-valle-campground-inventory",
          "stance": "supports"
        },
        {
          "claim_id": "claim-del-valle-campground-inventory",
          "evidence_id": "evidence-del-valle-ebrpd-campground-inventory",
          "notes": "",
          "observation_id": "observation-del-valle-ebrpd-campground",
          "stance": "supports"
        },
        {
          "claim_id": "claim-del-valle-campground-inventory",
          "evidence_id": "evidence-del-valle-camping-current-inventory",
          "notes": "",
          "observation_id": "observation-del-valle-camping-inventory",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The page describes Del Valle Family Campground as 150 campsites: 21 RV sites with full hookups, 124 drive-up tent sites, and five cabins, served by centrally located toilets and showers.",
          "observation_id": "observation-del-valle-campground-inventory",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-reserveamerica-del-valle-overview-110003"
        },
        {
          "artifact_refs": [],
          "content": "The EBRPD page states that the family campground has 150 sites, including two accessible sites and 21 sites with water, sewage, and 120-volt 50/30-amp electrical hookups; toilets and showers are centrally located. It separately states that five cabin sites take up to eight people and sleep five.",
          "observation_id": "observation-del-valle-ebrpd-campground",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-del-valle-park-page"
        },
        {
          "artifact_refs": [],
          "content": "The current camping page lists 150 family sites: 21 full-hookup RV sites, 124 drive-up tent sites, and five cabins; all family sites allow at most eight people and two vehicles.",
          "observation_id": "observation-del-valle-camping-inventory",
          "observed_at": null,
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-del-valle-camping"
        }
      ],
      "sources": [
        {
          "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview",
          "publisher": "ReserveAmerica / East Bay Regional Park District",
          "source_id": "source-reserveamerica-del-valle-overview-110003"
        },
        {
          "locator": "https://www.ebparks.org/parks/del-valle",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-del-valle-park-page"
        },
        {
          "locator": "https://www.ebparks.org/parks/del-valle/camping",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-del-valle-camping"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "campground-del-valle-family",
      "kind": "campground",
      "name": "Del Valle Family Campground"
    }
  ],
  "history": [
    {
      "action": "REPLACE",
      "change_set_id": "wp-20260920-del-valle-ebrpd-park-page",
      "evidence_refs": [
        "evidence-del-valle-campground-inventory",
        "evidence-del-valle-ebrpd-campground-inventory"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-del-valle-campground-inventory.json",
      "reason": "Add EBRPD park-page evidence, preserve conflicts, and refine current Del Valle knowledge.",
      "record_id": "claim-del-valle-campground-inventory",
      "record_type": "claim",
      "summary": "Add EBRPD Del Valle park-page evidence, corroborate the 150-site campground inventory, preserve the acreage conflict, and capture dated operational conditions and rechecks."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-del-valle-reserveamerica-foundation",
      "evidence_refs": [
        "evidence-del-valle-campground-inventory"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-del-valle-campground-inventory.json",
      "reason": "Establish the source-backed Del Valle foundation from the supplied ReserveAmerica overview.",
      "record_id": "claim-del-valle-campground-inventory",
      "record_type": "claim",
      "summary": "Establish Del Valle park and family-campground knowledge from the ReserveAmerica overview while preserving inventory, permit, and operational-condition uncertainty."
    },
    {
      "action": "REPLACE",
      "change_set_id": "wp-20260920-ebrpd-del-valle-campground-corpus",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-del-valle-campground-inventory.json",
      "reason": "Add the official EBRPD Del Valle campground corpus, preserving dated conflicts and live recheck boundaries.",
      "record_id": "claim-del-valle-campground-inventory",
      "record_type": "claim",
      "summary": "Ingest eight official EBRPD campground sources with current, dated, conflicting, and volatile evidence kept distinct."
    }
  ],
  "navigation": {
    "next_id": "claim-del-valle-campground-sanitation",
    "position": 120,
    "previous_id": "claim-del-valle-campground-in-park",
    "total": 3965
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "The page describes Del Valle Family Campground as 150 campsites: 21 RV sites with full hookups, 124 drive-up tent sites, and five cabins, served by centrally located toilets and showers.",
      "observation_id": "observation-del-valle-campground-inventory",
      "observed_at": null,
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-reserveamerica-del-valle-overview-110003"
    },
    {
      "artifact_refs": [],
      "content": "The current camping page lists 150 family sites: 21 full-hookup RV sites, 124 drive-up tent sites, and five cabins; all family sites allow at most eight people and two vehicles.",
      "observation_id": "observation-del-valle-camping-inventory",
      "observed_at": null,
      "observer": "Wayproof source review",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-del-valle-camping"
    },
    {
      "artifact_refs": [],
      "content": "The EBRPD page states that the family campground has 150 sites, including two accessible sites and 21 sites with water, sewage, and 120-volt 50/30-amp electrical hookups; toilets and showers are centrally located. It separately states that five cabin sites take up to eight people and sleep five.",
      "observation_id": "observation-del-valle-ebrpd-campground",
      "observed_at": null,
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-del-valle-park-page"
    }
  ],
  "record": {
    "claim_id": "claim-del-valle-campground-inventory",
    "evidence_ids": [
      "evidence-del-valle-campground-inventory",
      "evidence-del-valle-ebrpd-campground-inventory",
      "evidence-del-valle-camping-current-inventory"
    ],
    "predicate": "site_inventory",
    "spatial_scope_ids": [
      "scope-del-valle-family-campground"
    ],
    "subject_id": "campground-del-valle-family",
    "temporal_scope": null,
    "value": {
      "cabins": 5,
      "drive_up_tent": 124,
      "rv_full_hookup": 21,
      "total": 150
    }
  },
  "record_type": "claim",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/del-valle/camping",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-del-valle-camping"
    },
    {
      "locator": "https://www.ebparks.org/parks/del-valle",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-del-valle-park-page"
    },
    {
      "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview",
      "publisher": "ReserveAmerica / East Bay Regional Park District",
      "source_id": "source-reserveamerica-del-valle-overview-110003"
    }
  ]
}