{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-anthony-chabot-visitor-profile",
        "evidence_ids": [
          "evidence-ebrpd-anthony-chabot-visitor-profile"
        ],
        "predicate": "visitor_profile",
        "spatial_scope_ids": [
          "scope-anthony-chabot-regional-park"
        ],
        "subject_id": "park-anthony-chabot-regional-park",
        "temporal_scope": null,
        "value": {
          "access": "multiple entrances, staging areas, and walk-in gates on Redwood Road and Skyline Boulevard, plus trail access from Lake Chabot",
          "acreage": 3304,
          "activities": [
            "biking",
            "camping",
            "dogs",
            "hiking",
            "horseback riding",
            "kid-friendly"
          ],
          "address": "9999 Redwood Road, Castro Valley, CA 94546",
          "campground_and_group_camp_gate_hours": "08:00–22:00",
          "current_alerts": {
            "as_of": "2026-09-20",
            "family_campground_closure": "2026-10-12 through 2026-11-30 for restroom improvements and hazardous tree work",
            "trail_impacts": [
              "Brandon Trail segment inaccessible to equestrians",
              "Willowview Trail closed",
              "Redtail Trail closed between Brandon Trail and Grass Valley Trail",
              "Bird Trail permanently rerouted"
            ]
          },
          "family_campground": {
            "drive_to_tent_sites": 53,
            "facilities": [
              "picnic table and fire ring at each site",
              "hot showers"
            ],
            "no_day_use_parking": true,
            "rv_trailer_full_hookup_sites": 12,
            "walk_to_tent_sites": 10
          },
          "group_camps": {
            "capacity_range": [
              35,
              300
            ],
            "count": 7,
            "equestrian_camping": "Bort Meadow Group Camp",
            "minimum_people": 10,
            "reservation_required": true
          },
          "hours": "05:00–22:00",
          "parking_fee_usd": 0,
          "trail_miles": 70
        }
      },
      "evidence": [
        {
          "claim_id": "claim-anthony-chabot-visitor-profile",
          "evidence_id": "evidence-ebrpd-anthony-chabot-visitor-profile",
          "notes": "Direct transcription and conservative structuring of planning-relevant fields from the official park page.",
          "observation_id": "observation-ebrpd-anthony-chabot-visitor-profile",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Overview",
            "To Reach The Park",
            "Attractions"
          ],
          "content": "The live park page publishes the visitor profile represented by the associated claim, including access, operating information, facilities, and material restrictions.",
          "observation_id": "observation-ebrpd-anthony-chabot-visitor-profile",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-20T07:00:00+00:00",
          "source_id": "source-ebrpd-anthony-chabot-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/anthony-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-anthony-chabot-park-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "park-anthony-chabot-regional-park",
      "kind": "park",
      "name": "Anthony Chabot Regional Park"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-parks-batch-04",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-ebrpd-anthony-chabot-visitor-profile.json",
      "reason": "Add a deduplicated planning profile from the live EBRPD preserve page reviewed on 2026-09-20.",
      "record_id": "observation-ebrpd-anthony-chabot-visitor-profile",
      "record_type": "observation",
      "summary": "Add four additional previously uncaptured EBRPD park visitor profiles."
    }
  ],
  "navigation": {
    "next_id": "observation-ebrpd-antioch-oakley-visitor-profile",
    "position": 54,
    "previous_id": "observation-ebrpd-anthony-chabot-camping-20260921",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [
        "Overview",
        "To Reach The Park",
        "Attractions"
      ],
      "content": "The live park page publishes the visitor profile represented by the associated claim, including access, operating information, facilities, and material restrictions.",
      "observation_id": "observation-ebrpd-anthony-chabot-visitor-profile",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-20T07:00:00+00:00",
      "source_id": "source-ebrpd-anthony-chabot-park-page"
    }
  ],
  "record": {
    "artifact_refs": [
      "Overview",
      "To Reach The Park",
      "Attractions"
    ],
    "content": "The live park page publishes the visitor profile represented by the associated claim, including access, operating information, facilities, and material restrictions.",
    "observation_id": "observation-ebrpd-anthony-chabot-visitor-profile",
    "observed_at": null,
    "observer": "Wayproof live source review",
    "retrieved_at": "2026-09-20T07:00:00+00:00",
    "source_id": "source-ebrpd-anthony-chabot-park-page"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/anthony-chabot",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-anthony-chabot-park-page"
    }
  ]
}