Stack Rock
E540251
Stack Rock is a small, rocky island in the Milford Haven Waterway in Pembrokeshire, Wales, best known for the 19th-century Stack Rock Fort built upon it to defend the waterway.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Stack Rock canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5708427 — 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: Stack Rock Context triple: [Milford Haven Waterway, hasIsland, Stack Rock]
-
A.
Stony Gut
Stony Gut is a historic site in Jamaica known as the birthplace and rallying ground of national hero Paul Bogle and the 1865 Morant Bay Rebellion.
-
B.
Tremor Mountain
Tremor Mountain is a prominent peak in British Columbia’s Coast Mountains, known for its rugged alpine terrain and mountaineering opportunities.
-
C.
Ruisrock
Ruisrock is one of Finland’s oldest and largest rock and pop music festivals, held annually on the island of Ruissalo in Turku.
-
D.
Mimosa Rocks
Mimosa Rocks is a coastal rock formation in New South Wales, Australia, known for its striking cliffs and sea stacks within Mimosa Rocks National Park.
-
E.
Race Rocks
Race Rocks is a small group of rocky islets and reefs off southern Vancouver Island, known for its rich marine biodiversity, strong tidal currents, and historic lighthouse.
- 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: Stack Rock Target entity description: Stack Rock is a small, rocky island in the Milford Haven Waterway in Pembrokeshire, Wales, best known for the 19th-century Stack Rock Fort built upon it to defend the waterway.
-
A.
Stony Gut
Stony Gut is a historic site in Jamaica known as the birthplace and rallying ground of national hero Paul Bogle and the 1865 Morant Bay Rebellion.
-
B.
Tremor Mountain
Tremor Mountain is a prominent peak in British Columbia’s Coast Mountains, known for its rugged alpine terrain and mountaineering opportunities.
-
C.
Ruisrock
Ruisrock is one of Finland’s oldest and largest rock and pop music festivals, held annually on the island of Ruissalo in Turku.
-
D.
Mimosa Rocks
Mimosa Rocks is a coastal rock formation in New South Wales, Australia, known for its striking cliffs and sea stacks within Mimosa Rocks National Park.
-
E.
Race Rocks
Race Rocks is a small group of rocky islets and reefs off southern Vancouver Island, known for its rich marine biodiversity, strong tidal currents, and historic lighthouse.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
artillery fort
ⓘ
coastal fort ⓘ island ⓘ |
| access | by boat ⓘ |
| builtFor | defence of Milford Haven Waterway ⓘ |
| builtInPeriod | 19th century ⓘ |
| constructionStart | 19th century ⓘ |
| country | Wales ⓘ |
| hasFeature |
casemates
ⓘ
circular design ⓘ gun emplacements ⓘ |
| hasFortification | Stack Rock Fort ⓘ |
| hasStructure | Stack Rock Fort ⓘ |
| heritageStatus | historic fortification ⓘ |
| locatedIn |
Milford Haven Waterway
ⓘ
Pembrokeshire ⓘ United Kingdom ⓘ Wales ⓘ |
| locatedOn | Stack Rock ⓘ |
| material | stone ⓘ |
| nearbyCity | Milford Haven ⓘ |
| nearbyTown | Pembroke Dock ⓘ |
| notableFor |
19th-century coastal defence architecture
ⓘ
Stack Rock Fort ⓘ |
| partOf | Milford Haven defences ⓘ |
| purpose | coastal defence ⓘ |
| strategicLocation | entrance to Milford Haven Waterway ⓘ |
| surroundedBy |
Celtic Sea
ⓘ
Milford Haven Waterway ⓘ |
| usedBy |
British Army
ⓘ
Royal Navy ⓘ |
| usedFor | military defence ⓘ |
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: Stack Rock Description of subject: Stack Rock is a small, rocky island in the Milford Haven Waterway in Pembrokeshire, Wales, best known for the 19th-century Stack Rock Fort built upon it to defend the waterway.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Stack Rock