St Ann’s Head Lighthouse
E627440
St Ann’s Head Lighthouse is a coastal navigation beacon located on St Ann’s Head in Pembrokeshire, Wales, guiding ships at the entrance to Milford Haven Waterway near St Brides Bay.
All labels observed (1)
| Label | Occurrences |
|---|---|
| St Ann’s Head Lighthouse canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6621589 — 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: St Ann’s Head Lighthouse Context triple: [St Brides Bay, hasLighthouseNearby, St Ann’s Head Lighthouse]
-
A.
Berry Head Lighthouse
Berry Head Lighthouse is a historic coastal beacon on the Berry Head headland near Brixham in Devon, England, guiding ships navigating the entrance to Tor Bay.
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B.
Admiralty Head Lighthouse
Admiralty Head Lighthouse is a historic coastal beacon located on Whidbey Island in Washington State, known for guiding ships entering Puget Sound and for its distinctive Spanish-style architecture.
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C.
Strumble Head Lighthouse
Strumble Head Lighthouse is a coastal beacon on a small islet off the Pembrokeshire coast in Wales, guiding ships through the Irish Sea and serving as a notable local landmark.
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D.
Noss Head Lighthouse
Noss Head Lighthouse is a coastal navigational beacon in Caithness, Scotland, notable for its early use of a diagonal-pane lantern design and its role in guiding ships around the northeastern tip of the Scottish mainland.
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E.
St Mary’s Lighthouse
St Mary’s Lighthouse is a historic coastal lighthouse situated on a small tidal island off the coast of Whitley Bay in North East England, now popular as a visitor attraction and nature reserve.
- 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: St Ann’s Head Lighthouse Target entity description: St Ann’s Head Lighthouse is a coastal navigation beacon located on St Ann’s Head in Pembrokeshire, Wales, guiding ships at the entrance to Milford Haven Waterway near St Brides Bay.
-
A.
Berry Head Lighthouse
Berry Head Lighthouse is a historic coastal beacon on the Berry Head headland near Brixham in Devon, England, guiding ships navigating the entrance to Tor Bay.
-
B.
Admiralty Head Lighthouse
Admiralty Head Lighthouse is a historic coastal beacon located on Whidbey Island in Washington State, known for guiding ships entering Puget Sound and for its distinctive Spanish-style architecture.
-
C.
Strumble Head Lighthouse
Strumble Head Lighthouse is a coastal beacon on a small islet off the Pembrokeshire coast in Wales, guiding ships through the Irish Sea and serving as a notable local landmark.
-
D.
Noss Head Lighthouse
Noss Head Lighthouse is a coastal navigational beacon in Caithness, Scotland, notable for its early use of a diagonal-pane lantern design and its role in guiding ships around the northeastern tip of the Scottish mainland.
-
E.
St Mary’s Lighthouse
St Mary’s Lighthouse is a historic coastal lighthouse situated on a small tidal island off the coast of Whitley Bay in North East England, now popular as a visitor attraction and nature reserve.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
coastal navigation beacon
ⓘ
lighthouse ⓘ |
| automationStatus | automated ⓘ |
| bayServed | St Brides Bay NERFINISHED ⓘ |
| category |
Buildings and structures in Pembrokeshire
ⓘ
Lighthouses in Pembrokeshire ⓘ |
| coast | southwest coast of Wales ⓘ |
| country | United Kingdom ⓘ |
| function |
aids marine navigation
ⓘ
guides ships ⓘ |
| locatedIn |
Pembrokeshire
NERFINISHED
ⓘ
Wales ⓘ |
| locatedNear |
Milford Haven Waterway
NERFINISHED
ⓘ
St Brides Bay NERFINISHED ⓘ |
| locatedOnHeadland | St Ann’s Head NERFINISHED ⓘ |
| location | St Ann’s Head NERFINISHED ⓘ |
| managingAuthority | Trinity House NERFINISHED ⓘ |
| navigationalRole | marks entrance to Milford Haven Waterway ⓘ |
| navigationSystem | visual light signal ⓘ |
| operatedBy | Trinity House NERFINISHED ⓘ |
| originalConstruction | 18th century ⓘ |
| powerSource | electric ⓘ |
| purpose |
indicates safe approach to Milford Haven
ⓘ
warns of coastal hazards ⓘ |
| region | southwest Wales NERFINISHED ⓘ |
| sea | Celtic Sea NERFINISHED ⓘ |
| status | active lighthouse ⓘ |
| usedBy |
commercial shipping
ⓘ
fishing vessels ⓘ recreational boats ⓘ |
| waterwayServed | Milford Haven Waterway NERFINISHED ⓘ |
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: St Ann’s Head Lighthouse Description of subject: St Ann’s Head Lighthouse is a coastal navigation beacon located on St Ann’s Head in Pembrokeshire, Wales, guiding ships at the entrance to Milford Haven Waterway near St Brides Bay.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.