{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-las-trampas-corral-profile",
        "evidence_ids": [
          "evidence-las-trampas-corral-official-profile"
        ],
        "predicate": "site_inventory",
        "spatial_scope_ids": [
          "scope-las-trampas-corral-group-camp"
        ],
        "subject_id": "group-camp-las-trampas-corral",
        "temporal_scope": null,
        "value": {
          "bring_own_water": true,
          "minimum_advance_business_days": 3,
          "park_water_supply_reliable": false,
          "reservation_channel": "phone",
          "reservation_required": true,
          "site_type": "overnight_group_camp"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-las-trampas-corral-profile",
          "evidence_id": "evidence-las-trampas-corral-official-profile",
          "notes": "The official park page establishes the camp, booking lead time, and unreliable water supply.",
          "observation_id": "observation-ebrpd-las-trampas-camping-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Group Camping",
            "Hours"
          ],
          "content": "The official Las Trampas page identifies the Corral Area as a reservable overnight group camp and requires reservations at least three business days ahead. Campers must bring their own water because the park supply is inconsistent and can be unavailable. The page publishes seasonal park hours and says public Wi-Fi is unavailable.",
          "observation_id": "observation-ebrpd-las-trampas-camping-20260922",
          "observed_at": null,
          "observer": "Wayproof web source review",
          "retrieved_at": "2026-09-22T00:00:00-07:00",
          "source_id": "source-ebrpd-las-trampas-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/las-trampas",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-las-trampas-park-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "group-camp-las-trampas-corral",
      "kind": "group_campsite",
      "name": "Las Trampas Corral Area Group Camp"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260922-parks-deep-batch-02-group-camps",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-ebrpd-las-trampas-camping-20260922.json",
      "reason": "Publish source-backed Garin and Las Trampas group-camp knowledge through the existing canonical lifecycle.",
      "record_id": "observation-ebrpd-las-trampas-camping-20260922",
      "record_type": "observation",
      "summary": "Deepen Garin Arroyo Flats and Las Trampas Corral group-camp knowledge, preserving source conflict and booking gaps."
    }
  ],
  "navigation": {
    "next_id": "observation-ebrpd-las-trampas-visitor-profile",
    "position": 100,
    "previous_id": "observation-ebrpd-lake-chabot-visitor-profile",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [
        "Group Camping",
        "Hours"
      ],
      "content": "The official Las Trampas page identifies the Corral Area as a reservable overnight group camp and requires reservations at least three business days ahead. Campers must bring their own water because the park supply is inconsistent and can be unavailable. The page publishes seasonal park hours and says public Wi-Fi is unavailable.",
      "observation_id": "observation-ebrpd-las-trampas-camping-20260922",
      "observed_at": null,
      "observer": "Wayproof web source review",
      "retrieved_at": "2026-09-22T00:00:00-07:00",
      "source_id": "source-ebrpd-las-trampas-park-page"
    }
  ],
  "record": {
    "artifact_refs": [
      "Group Camping",
      "Hours"
    ],
    "content": "The official Las Trampas page identifies the Corral Area as a reservable overnight group camp and requires reservations at least three business days ahead. Campers must bring their own water because the park supply is inconsistent and can be unavailable. The page publishes seasonal park hours and says public Wi-Fi is unavailable.",
    "observation_id": "observation-ebrpd-las-trampas-camping-20260922",
    "observed_at": null,
    "observer": "Wayproof web source review",
    "retrieved_at": "2026-09-22T00:00:00-07:00",
    "source_id": "source-ebrpd-las-trampas-park-page"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/las-trampas",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-las-trampas-park-page"
    }
  ]
}