Stack Rock Fort
E540252
Stack Rock Fort is a 19th-century coastal artillery fort located on a small rocky islet in the Milford Haven Waterway in Pembrokeshire, Wales, built to defend the waterway against naval attack.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Stack Rock Fort canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5708430 — 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 Fort Context triple: [Milford Haven Waterway, hasFortification, Stack Rock Fort]
-
A.
High Knoll Fort
High Knoll Fort is a 19th-century hilltop fortress on the island of Saint Helena, historically used to defend the island and its strategic South Atlantic anchorage.
-
B.
Mont Fort
Mont Fort is a prominent alpine peak in the Swiss Alps renowned as the highest lift-accessible point in the Verbier ski area, offering extensive skiing and panoramic mountain views.
-
C.
Gates Fort
Gates Fort is a small historic coastal fortification in St. George’s, Bermuda, built to guard the entrance to St. George’s Harbour.
-
D.
Cove Fort
Cove Fort is a historic 19th-century way station and fort in central Utah that served travelers and mail routes along the Mormon Corridor.
-
E.
Fort Roupel
Fort Roupel is a historic Greek military fortification near the Bulgarian border, known for its strategic role and fierce resistance during World War II.
- 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 Fort Target entity description: Stack Rock Fort is a 19th-century coastal artillery fort located on a small rocky islet in the Milford Haven Waterway in Pembrokeshire, Wales, built to defend the waterway against naval attack.
-
A.
High Knoll Fort
High Knoll Fort is a 19th-century hilltop fortress on the island of Saint Helena, historically used to defend the island and its strategic South Atlantic anchorage.
-
B.
Mont Fort
Mont Fort is a prominent alpine peak in the Swiss Alps renowned as the highest lift-accessible point in the Verbier ski area, offering extensive skiing and panoramic mountain views.
-
C.
Gates Fort
Gates Fort is a small historic coastal fortification in St. George’s, Bermuda, built to guard the entrance to St. George’s Harbour.
-
D.
Cove Fort
Cove Fort is a historic 19th-century way station and fort in central Utah that served travelers and mail routes along the Mormon Corridor.
-
E.
Fort Roupel
Fort Roupel is a historic Greek military fortification near the Bulgarian border, known for its strategic role and fierce resistance during World War II.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
19th-century fortification
ⓘ
Grade II* listed building ⓘ coastal artillery fort ⓘ |
| access | by boat ⓘ |
| armament |
RML guns
ⓘ
heavy artillery ⓘ |
| builtFor | British government NERFINISHED ⓘ |
| category |
19th-century forts in the United Kingdom
ⓘ
Coastal fortifications in Wales ⓘ Forts in Pembrokeshire ⓘ |
| conflictContext | Napoleonic Wars aftermath ⓘ |
| constructionEnd | 1852 ⓘ |
| constructionStart | 1850 ⓘ |
| coordinateSystem | WGS84 NERFINISHED ⓘ |
| country |
United Kingdom
ⓘ
Wales ⓘ |
| designedToDefend | Royal Navy anchorage at Milford Haven ⓘ |
| elevation | sea level ⓘ |
| era | Victorian era ⓘ |
| garrisonedBy | British Army troops ⓘ |
| hasCondition | partially ruined ⓘ |
| hasFeature |
accommodation quarters
ⓘ
casemated gun positions ⓘ central courtyard ⓘ circular gun tower ⓘ |
| heritageDesignation | Grade II* listed ⓘ |
| locatedIn |
Pembrokeshire
NERFINISHED
ⓘ
United Kingdom ⓘ Wales ⓘ |
| locatedOn | small rocky islet ⓘ |
| location | Milford Haven Waterway NERFINISHED ⓘ |
| materialUsed |
brick
ⓘ
stone ⓘ |
| nearby |
Milford Haven
NERFINISHED
ⓘ
Pembroke Dock NERFINISHED ⓘ |
| openToPublic | limited access ⓘ |
| operator | British Army NERFINISHED ⓘ |
| ownedBy | private owner ⓘ |
| partOf | Milford Haven defences NERFINISHED ⓘ |
| purpose | defend Milford Haven Waterway against naval attack ⓘ |
| status | disused fort ⓘ |
| usedFor | coastal defence ⓘ |
| visibleFrom | Milford Haven Waterway shipping channel 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: Stack Rock Fort Description of subject: Stack Rock Fort is a 19th-century coastal artillery fort located on a small rocky islet in the Milford Haven Waterway in Pembrokeshire, Wales, built to defend the waterway against naval attack.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.