{
  "asset_id": "LUX-ASSET-000797",
  "edges": [
    {
      "confidence_level": "medium",
      "date": "1613",
      "description": "Alternative specialist chronology: the octagonal work was completed and the light re-established in 1613. This is functional transfer, not movement of the medieval tower.",
      "event_id": "portopi-function-transfer-1613",
      "id": "HERITAGE-REL-000354",
      "relation_type": "navigation_function_transferred_to",
      "source": "LUX-ASSET-000792",
      "target": "LUX-ASSET-000793"
    },
    {
      "confidence_level": "medium",
      "date": "1613",
      "description": "The octagonal lighthouse-bearing section is a later architectural phase of Torre del Senyal, not a replacement tower.",
      "event_id": "HERITAGE-REL-000357",
      "id": "HERITAGE-REL-000357",
      "relation_type": "part_of",
      "source": "LUX-ASSET-000794",
      "target": "LUX-ASSET-000793"
    },
    {
      "confidence_level": "high",
      "date": "1617",
      "description": "APB chronology: work begun in 1613 was delayed by military concerns and the light transferred in 1617. Exact sequence remains open.",
      "event_id": "portopi-function-transfer-1617",
      "id": "HERITAGE-REL-000355",
      "relation_type": "navigation_function_transferred_to",
      "source": "LUX-ASSET-000792",
      "target": "LUX-ASSET-000793"
    },
    {
      "confidence_level": "high",
      "date": "1617",
      "description": "Torre del Senyal is the current physical host of the Portopí navigational light; this does not make it the same building as the medieval Torre del Faro.",
      "event_id": "HERITAGE-REL-000356",
      "id": "HERITAGE-REL-000356",
      "relation_type": "installed_at",
      "source": "LUX-ASSET-000791",
      "target": "LUX-ASSET-000793"
    },
    {
      "confidence_level": "high",
      "date": "1807",
      "description": "Matías Edel's rotating catoptric apparatus was installed at Portopí in 1807.",
      "event_id": "HERITAGE-REL-000358",
      "id": "HERITAGE-REL-000358",
      "relation_type": "installed_in",
      "source": "LUX-ASSET-000795",
      "target": "LUX-ASSET-000793"
    },
    {
      "confidence_level": "high",
      "date": "1849-12-18",
      "description": "The three-reflector clockwork apparatus entered service on 18 December 1849 with a reported 8 nm range.",
      "event_id": "HERITAGE-REL-000359",
      "id": "HERITAGE-REL-000359",
      "relation_type": "installed_in",
      "source": "LUX-ASSET-000796",
      "target": "LUX-ASSET-000793"
    },
    {
      "confidence_level": "high",
      "date": "1913-06-27",
      "description": "The fifth-order apparatus was completed on 27 June 1913.",
      "event_id": "HERITAGE-REL-000360",
      "id": "HERITAGE-REL-000360",
      "relation_type": "installed_in",
      "source": "LUX-ASSET-000797",
      "target": "LUX-ASSET-000793"
    },
    {
      "confidence_level": "high",
      "date": "1927",
      "description": "The Sautter catoptric reflector apparatus was installed in 1927 and established the two-white-flashes-every-15-seconds characteristic.",
      "event_id": "HERITAGE-REL-000362",
      "id": "HERITAGE-REL-000362",
      "relation_type": "installed_in",
      "source": "LUX-ASSET-000798",
      "target": "LUX-ASSET-000793"
    },
    {
      "confidence_level": "high",
      "date": "1927",
      "description": "The 1927 lantern and upper-tower modification form a distinct physical phase from the Sautter optical apparatus.",
      "event_id": "HERITAGE-REL-000363",
      "id": "HERITAGE-REL-000363",
      "relation_type": "installed_in",
      "source": "LUX-ASSET-000799",
      "target": "LUX-ASSET-000793"
    },
    {
      "confidence_level": "high",
      "date": "1983-08-04",
      "description": "Royal Decree 2656/1983 legally designates Torre del Senyal specifically.",
      "event_id": "HERITAGE-REL-000367",
      "id": "HERITAGE-REL-000367",
      "relation_type": "documented_by",
      "source": "LUX-ASSET-000793",
      "target": "LUX-ASSET-000800"
    }
  ],
  "nodes": [
    {
      "asset_kind": "navigation_sign",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000791",
      "is_root": false,
      "label": "Portopí navigational light",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000791/"
    },
    {
      "asset_kind": "tower",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000792",
      "is_root": false,
      "label": "Medieval Torre del Faro",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000792/"
    },
    {
      "asset_kind": "tower",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000793",
      "is_root": false,
      "label": "Torre del Senyal",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000793/"
    },
    {
      "asset_kind": "structure",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000794",
      "is_root": false,
      "label": "Octagonal lighthouse-bearing upper section of Torre del Senyal",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000794/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000795",
      "is_root": false,
      "label": "Matías Edel rotating catoptric apparatus",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000795/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000796",
      "is_root": false,
      "label": "Portopí 1849 three-reflector apparatus",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000796/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000797",
      "is_root": true,
      "label": "Portopí fifth-order optical apparatus",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000797/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000798",
      "is_root": false,
      "label": "Portopí Sautter catoptric reflector apparatus",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000798/"
    },
    {
      "asset_kind": "lantern",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000799",
      "is_root": false,
      "label": "Portopí 1927 lantern and upper-tower modification",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000799/"
    },
    {
      "asset_kind": "document",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000800",
      "is_root": false,
      "label": "Royal Decree 2656/1983 designation record",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000800/"
    }
  ],
  "root_id": "LUX-ASSET-000797"
}