Portmadoc
E940031
Portmadoc is the former English name for Porthmadog, a coastal town in Gwynedd, northwest Wales, known historically for its maritime trade and as a gateway to Snowdonia.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Portmadoc canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11627571 — 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: Portmadoc Context triple: [Porthmadog, alsoKnownAs, Portmadoc]
-
A.
Nantmor
Nantmor is a small rural village in Gwynedd, North Wales, known for its scenic location in Snowdonia near the Aberglaslyn Pass and its popular walking routes.
-
B.
Douarnenez
Douarnenez is a coastal town in Brittany, France, known for its historic sardine fishing industry and picturesque harbor.
-
C.
Portnahaven
Portnahaven is a small coastal village located on the southwest tip of the Scottish island of Islay, known for its picturesque harbor and views toward the Atlantic.
-
D.
Mevagissey
Mevagissey is a traditional fishing village and popular tourist destination on the south coast of Cornwall in southwest England.
-
E.
Gorseinon
Gorseinon is a suburban town in South Wales known for its community amenities and proximity to Swansea.
- 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: Portmadoc Target entity description: Portmadoc is the former English name for Porthmadog, a coastal town in Gwynedd, northwest Wales, known historically for its maritime trade and as a gateway to Snowdonia.
-
A.
Nantmor
Nantmor is a small rural village in Gwynedd, North Wales, known for its scenic location in Snowdonia near the Aberglaslyn Pass and its popular walking routes.
-
B.
Douarnenez
Douarnenez is a coastal town in Brittany, France, known for its historic sardine fishing industry and picturesque harbor.
-
C.
Portnahaven
Portnahaven is a small coastal village located on the southwest tip of the Scottish island of Islay, known for its picturesque harbor and views toward the Atlantic.
-
D.
Mevagissey
Mevagissey is a traditional fishing village and popular tourist destination on the south coast of Cornwall in southwest England.
-
E.
Gorseinon
Gorseinon is a suburban town in South Wales known for its community amenities and proximity to Swansea.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
exonym
ⓘ
former place name ⓘ |
| appliedTo | town of Porthmadog ⓘ |
| associatedWith |
Porthmadog harbour
ⓘ
Snowdonia ⓘ |
| country | United Kingdom ⓘ |
| economicActivity |
shipping
ⓘ
slate export ⓘ |
| formerNameOf | Porthmadog ⓘ |
| geographicFeature | coast ⓘ |
| historicalPeriod |
19th century
ⓘ
20th century ⓘ |
| knownFor |
being a gateway to Snowdonia
ⓘ
maritime trade ⓘ |
| languageOfName | English ⓘ |
| locatedIn |
Gwynedd
ⓘ
Wales ⓘ northwest Wales ⓘ
linked to:
north-west Wales
|
| nameDerivedFrom | Porthmadog ⓘ |
| near |
Snowdonia National Park
ⓘ
linked to:
Snowdonia
Tremadog Bay ⓘ |
| partOf | historic county of Caernarfonshire ⓘ |
| region | Eifionydd ⓘ |
| relevantTo |
Welsh maritime history
ⓘ
toponymy of Wales ⓘ |
| replacedBy | Porthmadog ⓘ |
| spellingVariantOf | Porthmadog ⓘ |
| status | obsolete name ⓘ |
| transportRole | port town ⓘ |
| usedFor | coastal town ⓘ |
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: Portmadoc Description of subject: Portmadoc is the former English name for Porthmadog, a coastal town in Gwynedd, northwest Wales, known historically for its maritime trade and as a gateway to Snowdonia.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
PORTHMADOG