St Catherine’s Breakwater
E653425
St Catherine’s Breakwater is a long protective sea wall and pier on the northeast coast of Jersey, originally built in the 19th century as part of an unfinished harbour project and now used for coastal defence and recreation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| St Catherine's Breakwater | 1 |
| St Catherine’s Breakwater canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7278287 — 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 Catherine’s Breakwater Context triple: [Parish of St. Martin, Jersey, contains, St Catherine’s Breakwater]
-
A.
Plymouth Breakwater
Plymouth Breakwater is a massive early 19th-century stone breakwater in Plymouth Sound, England, built to protect the naval anchorage and harbor from the open sea.
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B.
Brixham Breakwater
Brixham Breakwater is a long protective sea wall and popular walking spot that shelters Brixham Harbour on the south coast of Devon, England.
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C.
Holyhead Breakwater
Holyhead Breakwater is a massive 19th-century stone breakwater in Holyhead, Wales, built to protect its harbor and known as one of the longest structures of its kind in the UK.
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D.
Gloucester breakwater
Gloucester breakwater is a protective stone structure extending into the Atlantic Ocean that shelters Gloucester Harbor in Massachusetts from waves and storms.
-
E.
Blackrock Pier
Blackrock Pier is a small coastal pier and local landmark in the village of Blackrock in County Cork, Ireland, used for leisure, fishing, and waterfront access.
- 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 Catherine’s Breakwater Target entity description: St Catherine’s Breakwater is a long protective sea wall and pier on the northeast coast of Jersey, originally built in the 19th century as part of an unfinished harbour project and now used for coastal defence and recreation.
-
A.
Plymouth Breakwater
Plymouth Breakwater is a massive early 19th-century stone breakwater in Plymouth Sound, England, built to protect the naval anchorage and harbor from the open sea.
-
B.
Brixham Breakwater
Brixham Breakwater is a long protective sea wall and popular walking spot that shelters Brixham Harbour on the south coast of Devon, England.
-
C.
Holyhead Breakwater
Holyhead Breakwater is a massive 19th-century stone breakwater in Holyhead, Wales, built to protect its harbor and known as one of the longest structures of its kind in the UK.
-
D.
Gloucester breakwater
Gloucester breakwater is a protective stone structure extending into the Atlantic Ocean that shelters Gloucester Harbor in Massachusetts from waves and storms.
-
E.
Blackrock Pier
Blackrock Pier is a small coastal pier and local landmark in the village of Blackrock in County Cork, Ireland, used for leisure, fishing, and waterfront access.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
breakwater
ⓘ
pier ⓘ |
| access | open to the public ⓘ |
| builtFor |
coastal defence
ⓘ
harbour construction ⓘ naval harbour project ⓘ |
| coastType | rocky coast ⓘ |
| constructionStartDate | mid-19th century ⓘ |
| country | Jersey ⓘ |
| currentUse |
angling
ⓘ
coastal defence ⓘ recreation ⓘ sightseeing ⓘ walking ⓘ |
| faces | English Channel ⓘ |
| function |
protect harbour area from waves
ⓘ
shelter small craft ⓘ |
| hasNearby |
St Catherine’s Bay
ⓘ
St Catherine’s Woods ⓘ St Catherine’s lifeboat station ⓘ boat slip ⓘ car park ⓘ |
| hasPart |
pier head
ⓘ
slipway ⓘ |
| hasViewOf | French coast on clear days ⓘ |
| heritageStatus | local landmark ⓘ |
| locatedIn |
Channel Islands
ⓘ
linked to:
Channel Islands (crown dependencies)
St Catherine ⓘ |
| locatedInWaterBody | Grouville Bay ⓘ |
| location | northeast coast of Jersey ⓘ |
| maintainedBy | Government of Jersey ⓘ |
| materialUsed | stone ⓘ |
| owner | Government of Jersey ⓘ |
| safetyRole |
provides sheltered water area
ⓘ
reduces coastal erosion ⓘ |
| status | harbour project unfinished ⓘ |
| structureType | masonry marine structure ⓘ |
| tourism |
popular with local residents
ⓘ
popular with visitors ⓘ |
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 Catherine’s Breakwater Description of subject: St Catherine’s Breakwater is a long protective sea wall and pier on the northeast coast of Jersey, originally built in the 19th century as part of an unfinished harbour project and now used for coastal defence and recreation.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: St Catherine’s Breakwater