{
  "asset_id": "LUX-ASSET-000642",
  "edges": [
    {
      "confidence_level": "high",
      "date": "1830",
      "description": "La Coubre's station mandate continues on the changing coast; the mapped point represents the current site only.",
      "event_id": "HERITAGE-REL-000137",
      "id": "HERITAGE-REL-000137",
      "relation_type": "located_at",
      "source": "LUX-ASSET-000639",
      "target": "LUX-PLACE-000022"
    },
    {
      "confidence_level": "high",
      "date": "1830",
      "description": "The 1830 timber light is the first reviewed generation in the La Coubre succession.",
      "event_id": "HERITAGE-REL-000138",
      "id": "HERITAGE-REL-000138",
      "relation_type": "part_of",
      "source": "LUX-ASSET-000641",
      "target": "LUX-ASSET-000639"
    },
    {
      "confidence_level": "high",
      "date": "1830",
      "description": "The signal lineage links the successive La Coubre structures to one navigational identity.",
      "event_id": "HERITAGE-REL-000144",
      "id": "HERITAGE-REL-000144",
      "relation_type": "historically_part_of",
      "source": "LUX-ASSET-000639",
      "target": "LUX-LH-000619"
    },
    {
      "confidence_level": "high",
      "date": "1842",
      "description": "The timber tower was succeeded by a masonry light with keeper accommodation.",
      "event_id": "HERITAGE-REL-000139",
      "id": "HERITAGE-REL-000139",
      "relation_type": "replaced_by",
      "source": "LUX-ASSET-000641",
      "target": "LUX-ASSET-000642"
    },
    {
      "confidence_level": "high",
      "date": "1860",
      "description": "Coastal erosion forced a return to a timber scaffold.",
      "event_id": "HERITAGE-REL-000140",
      "id": "HERITAGE-REL-000140",
      "relation_type": "replaced_by",
      "source": "LUX-ASSET-000642",
      "target": "LUX-ASSET-000643"
    },
    {
      "confidence_level": "high",
      "date": "1895",
      "description": "The timber scaffold was succeeded by a masonry tower.",
      "event_id": "HERITAGE-REL-000141",
      "id": "HERITAGE-REL-000141",
      "relation_type": "replaced_by",
      "source": "LUX-ASSET-000643",
      "target": "LUX-ASSET-000644"
    },
    {
      "confidence_level": "high",
      "date": "1905",
      "description": "The current reinforced-concrete tower was lit inland before the predecessor collapsed.",
      "event_id": "HERITAGE-REL-000142",
      "id": "HERITAGE-REL-000142",
      "relation_type": "replaced_by",
      "source": "LUX-ASSET-000644",
      "target": "LUX-ASSET-000645"
    },
    {
      "confidence_level": "high",
      "date": "1907",
      "description": "The 1895 masonry tower collapsed into the sea in March 1907; exact historical coordinate remains unresolved.",
      "event_id": "HERITAGE-REL-000143",
      "id": "HERITAGE-REL-000143",
      "relation_type": "destroyed",
      "source": "LUX-ASSET-000644",
      "target": "LUX-PLACE-000022"
    }
  ],
  "nodes": [
    {
      "asset_kind": "site",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000639",
      "is_root": false,
      "label": "La Coubre signal lineage",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000639/"
    },
    {
      "asset_kind": "tower",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000641",
      "is_root": false,
      "label": "La Coubre 1830 timber tower",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000641/"
    },
    {
      "asset_kind": "tower",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000642",
      "is_root": true,
      "label": "La Coubre 1842 masonry light",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000642/"
    },
    {
      "asset_kind": "tower",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000643",
      "is_root": false,
      "label": "La Coubre 1860 timber scaffold",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000643/"
    },
    {
      "asset_kind": "tower",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000644",
      "is_root": false,
      "label": "La Coubre 1895 masonry tower",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000644/"
    },
    {
      "asset_kind": "tower",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000645",
      "is_root": false,
      "label": "La Coubre 1905 reinforced-concrete tower",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000645/"
    },
    {
      "asset_kind": "",
      "entity_type": "lighthouse",
      "id": "LUX-LH-000619",
      "is_root": false,
      "label": "La Coubre Lighthouse",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/lighthouses/LUX-LH-000619/"
    },
    {
      "asset_kind": "",
      "entity_type": "heritage_place",
      "id": "LUX-PLACE-000022",
      "is_root": false,
      "label": "La Coubre lighthouse site",
      "latitude": 45.696944,
      "longitude": -1.233889,
      "place_type": "heritage_site",
      "url": "/heritage-places/LUX-PLACE-000022/"
    }
  ],
  "root_id": "LUX-ASSET-000642"
}