Porthmadog harbour
E857584
Porthmadog harbour is a historic coastal port in Gwynedd, Wales, known for its maritime heritage and scenic waterfront at the edge of the town of Porthmadog.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Porthmadog harbour canonical | 3 |
| Porthmadog Harbour | 2 |
| Cob at Tremadog Bay | 1 |
| Porthmadog Bay area | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10313840 — 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: Porthmadog harbour Context triple: [Porthmadog Harbour Station, near, Porthmadog harbour]
-
A.
Porthcawl Harbour
Porthcawl Harbour is a historic coastal harbour in the seaside town of Porthcawl, Wales, known for its maritime heritage and role in local fishing and leisure boating.
-
B.
Caernarfon harbour
Caernarfon harbour is a small historic port area in the town of Caernarfon, Gwynedd, known for its scenic waterfront setting near Caernarfon Castle and its role in local maritime activity.
-
C.
Aberystwyth harbour
Aberystwyth harbour is a coastal harbour at the mouth of the River Rheidol in Aberystwyth, Wales, known for its marina, fishing activity, and scenic views over Cardigan Bay.
-
D.
Rhyl Harbour
Rhyl Harbour is a coastal marina and waterfront area in Rhyl, Wales, known for its boating facilities, promenade, and seaside leisure activities.
-
E.
Amlwch Harbour
Amlwch Harbour is a historic coastal port on the north coast of Anglesey in Wales, once central to the region’s copper mining and maritime trade.
- 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: Porthmadog harbour Target entity description: Porthmadog harbour is a historic coastal port in Gwynedd, Wales, known for its maritime heritage and scenic waterfront at the edge of the town of Porthmadog.
-
A.
Porthcawl Harbour
Porthcawl Harbour is a historic coastal harbour in the seaside town of Porthcawl, Wales, known for its maritime heritage and role in local fishing and leisure boating.
-
B.
Caernarfon harbour
Caernarfon harbour is a small historic port area in the town of Caernarfon, Gwynedd, known for its scenic waterfront setting near Caernarfon Castle and its role in local maritime activity.
-
C.
Aberystwyth harbour
Aberystwyth harbour is a coastal harbour at the mouth of the River Rheidol in Aberystwyth, Wales, known for its marina, fishing activity, and scenic views over Cardigan Bay.
-
D.
Rhyl Harbour
Rhyl Harbour is a coastal marina and waterfront area in Rhyl, Wales, known for its boating facilities, promenade, and seaside leisure activities.
-
E.
Amlwch Harbour
Amlwch Harbour is a historic coastal port on the north coast of Anglesey in Wales, once central to the region’s copper mining and maritime trade.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
harbour
ⓘ
port ⓘ |
| administrativeArea | Gwynedd Council NERFINISHED ⓘ |
| climate | maritime climate ⓘ |
| connectedTo |
Ffestiniog Railway
NERFINISHED
ⓘ
Welsh Highland Railway NERFINISHED ⓘ |
| country | Wales ⓘ |
| edgeOf | town of Porthmadog NERFINISHED ⓘ |
| hasActivity |
boating
ⓘ
harbour-side walking ⓘ sightseeing ⓘ |
| hasCharacteristic |
coastal
ⓘ
historic ⓘ scenic waterfront ⓘ |
| hasFeature |
harbour walls
ⓘ
marina-style berths ⓘ moorings ⓘ quayside ⓘ |
| hasHeritage | maritime heritage ⓘ |
| hasNearbyPath | Wales Coast Path NERFINISHED ⓘ |
| hasViewOf |
Snowdonia mountains
NERFINISHED
ⓘ
Tremadog Bay NERFINISHED ⓘ |
| historicallyExported | slate ⓘ |
| languageRegion | Welsh-speaking area ⓘ |
| locatedIn |
Gwynedd
NERFINISHED
ⓘ
North Wales NERFINISHED ⓘ Porthmadog NERFINISHED ⓘ |
| locatedInTimeZone | Europe/London ⓘ |
| locatedNear | Tremadog Bay NERFINISHED ⓘ |
| locatedOnWaterbody | Afon Glaslyn estuary NERFINISHED ⓘ |
| nearbyAttraction |
Ffestiniog Railway Harbour Station
NERFINISHED
ⓘ
Porthmadog town centre NERFINISHED ⓘ |
| nearbySettlement |
Borth-y-Gest
NERFINISHED
ⓘ
Tremadog NERFINISHED ⓘ |
| openingTo | Cardigan Bay NERFINISHED ⓘ |
| partOf | Porthmadog NERFINISHED ⓘ |
| region |
Gwynedd
NERFINISHED
ⓘ
Wales ⓘ |
| tourismType |
coastal tourism
ⓘ
heritage tourism ⓘ |
| transportLink |
A487 road
NERFINISHED
ⓘ
Porthmadog railway station NERFINISHED ⓘ |
| usedFor |
recreational boating
ⓘ
shipping ⓘ tourism ⓘ trade ⓘ |
| waterType | tidal estuary ⓘ |
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: Porthmadog harbour Description of subject: Porthmadog harbour is a historic coastal port in Gwynedd, Wales, known for its maritime heritage and scenic waterfront at the edge of the town of Porthmadog.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Porthmadog
this entity surface form:
Porthmadog Harbour
subject surface form:
Porthmadog
this entity surface form:
Porthmadog Harbour
this entity surface form:
Cob at Tremadog Bay
this entity surface form:
Porthmadog Bay area