Caldey Lighthouse
E571387
Caldey Lighthouse is a coastal navigational beacon on Caldey Island off the coast of Wales, guiding ships through the Bristol Channel.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Caldey Lighthouse canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6114451 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Caldey Lighthouse Context triple: [Caldey Island, hasStructure, Caldey Lighthouse]
-
A.
Stoer Head Lighthouse
Stoer Head Lighthouse is a historic coastal beacon in Sutherland, Scotland, known for guiding ships along the rugged northwest Highlands since the late 19th century.
-
B.
Bressay Lighthouse
Bressay Lighthouse is a historic coastal beacon on the island of Bressay in Shetland, Scotland, guiding ships entering Lerwick Harbour since the mid-19th century.
-
C.
Mull of Galloway Lighthouse
Mull of Galloway Lighthouse is a historic coastal lighthouse situated at the southernmost point of Scotland, overlooking the Irish Sea and serving as a prominent navigational landmark.
-
D.
Barra Head Lighthouse
Barra Head Lighthouse is a remote Scottish lighthouse situated on the southern tip of the Outer Hebrides, guiding ships through the hazardous waters around the island of Berneray.
-
E.
Covesea Skerries Lighthouse
Covesea Skerries Lighthouse is a historic Scottish coastal lighthouse near Lossiemouth, Moray, known for guiding ships through the dangerous skerries of the Moray Firth.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Caldey Lighthouse Target entity description: Caldey Lighthouse is a coastal navigational beacon on Caldey Island off the coast of Wales, guiding ships through the Bristol Channel.
-
A.
Stoer Head Lighthouse
Stoer Head Lighthouse is a historic coastal beacon in Sutherland, Scotland, known for guiding ships along the rugged northwest Highlands since the late 19th century.
-
B.
Bressay Lighthouse
Bressay Lighthouse is a historic coastal beacon on the island of Bressay in Shetland, Scotland, guiding ships entering Lerwick Harbour since the mid-19th century.
-
C.
Mull of Galloway Lighthouse
Mull of Galloway Lighthouse is a historic coastal lighthouse situated at the southernmost point of Scotland, overlooking the Irish Sea and serving as a prominent navigational landmark.
-
D.
Barra Head Lighthouse
Barra Head Lighthouse is a remote Scottish lighthouse situated on the southern tip of the Outer Hebrides, guiding ships through the hazardous waters around the island of Berneray.
-
E.
Covesea Skerries Lighthouse
Covesea Skerries Lighthouse is a historic Scottish coastal lighthouse near Lossiemouth, Moray, known for guiding ships through the dangerous skerries of the Moray Firth.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
coastal navigational aid
ⓘ
lighthouse ⓘ |
| access | not generally open to the public ⓘ |
| automated | yes ⓘ |
| automationYear | 1927 ⓘ |
| constructionMaterial | masonry tower ⓘ |
| constructionPeriod | early 19th century ⓘ |
| continent | Europe ⓘ |
| country | United Kingdom ⓘ |
| flashPeriod | 7.5 seconds ⓘ |
| focalHeight | 64 metres ⓘ |
| hasBalcony | yes ⓘ |
| hasFunction | marine navigation ⓘ |
| hasKeeperDwelling | former keeper’s cottages adjacent to tower ⓘ |
| hasLantern | yes ⓘ |
| height | 17 metres ⓘ |
| heritage | part of the historic lighthouse network of Trinity House ⓘ |
| isPartOf | network of lighthouses in the Bristol Channel ⓘ |
| lightCharacteristic | Fl W 7.5s ⓘ |
| lightColor | white ⓘ |
| locatedIn |
Bristol Channel
ⓘ
Caldey Island ⓘ Pembrokeshire ⓘ Wales ⓘ |
| locatedNear | Tenby ⓘ |
| locatedOn | cliffs on the south side of Caldey Island ⓘ |
| locatedOnIsland | Caldey Island ⓘ |
| managedBy | Trinity House ⓘ |
| maritimeAuthorityArea | United Kingdom coastal waters ⓘ |
| marking |
black lantern roof
ⓘ
white lantern ⓘ white tower ⓘ |
| navigationSystemType | visual light signal ⓘ |
| nearbyWaterBody | Celtic Sea ⓘ |
| operatorJurisdiction |
General Lighthouse Authority for England, Wales and the Channel Islands
ⓘ
linked to:
Trinity House
|
| originalLensType | catadioptric lens ⓘ |
| powerSource | mains electricity ⓘ |
| previousLightSource | oil lamp ⓘ |
| purpose |
to guide ships through the Bristol Channel
ⓘ
to mark the approach to Tenby and Caldey Island ⓘ |
| range | 13 nautical miles ⓘ |
| region |
Southwest Wales
ⓘ
linked to:
West Wales
|
| seaAreaServed | Bristol Channel ⓘ |
| status | active lighthouse ⓘ |
| towerShape | cylindrical tower with balcony and lantern ⓘ |
| visibilitySector | seaward arc off Caldey Island ⓘ |
| warningRole | warns shipping of Caldey Island and nearby hazards ⓘ |
| yearLit | 1829 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Caldey Lighthouse Description of subject: Caldey Lighthouse is a coastal navigational beacon on Caldey Island off the coast of Wales, guiding ships through the Bristol Channel.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.