Plynlimon
E43731
Plynlimon is a massif in central Wales known as the mountainous area where several major rivers, including the River Severn, have their headwaters.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Plynlimon canonical | 8 |
| Plynlimon massif | 4 |
| Plynlimon range | 2 |
| Plynlimon (Pen Pumlumon Fawr) | 1 |
| Plynlimon uplands | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T332973 — 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: Plynlimon Context triple: [Severn, sourceLocation, Plynlimon]
-
A.
Penrhyndeudraeth
Penrhyndeudraeth is a small town in Gwynedd, northwest Wales, known for its scenic setting near the Dwyryd estuary and the Italianate village of Portmeirion.
-
B.
Monifieth
Monifieth is a coastal town in eastern Scotland, situated on the north shore of the Firth of Tay near Dundee.
-
C.
Fishguard
Fishguard is a coastal town in Pembrokeshire, Wales, known as an important ferry port linking Wales and Ireland across the Irish Sea.
-
D.
Neath
Neath is a historic industrial and market town in South Wales, known for its Roman and medieval heritage and its role in the coal and steel industries.
-
E.
Mull
Mull is a large island in the Inner Hebrides of Scotland, known for its rugged coastline, wildlife, and the colorful harbor town of Tobermory.
- 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: Plynlimon Target entity description: Plynlimon is a massif in central Wales known as the mountainous area where several major rivers, including the River Severn, have their headwaters.
-
A.
Penrhyndeudraeth
Penrhyndeudraeth is a small town in Gwynedd, northwest Wales, known for its scenic setting near the Dwyryd estuary and the Italianate village of Portmeirion.
-
B.
Monifieth
Monifieth is a coastal town in eastern Scotland, situated on the north shore of the Firth of Tay near Dundee.
-
C.
Fishguard
Fishguard is a coastal town in Pembrokeshire, Wales, known as an important ferry port linking Wales and Ireland across the Irish Sea.
-
D.
Neath
Neath is a historic industrial and market town in South Wales, known for its Roman and medieval heritage and its role in the coal and steel industries.
-
E.
Mull
Mull is a large island in the Inner Hebrides of Scotland, known for its rugged coastline, wildlife, and the colorful harbor town of Tobermory.
- F. None of above. chosen
Statements (48)
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: Plynlimon Description of subject: Plynlimon is a massif in central Wales known as the mountainous area where several major rivers, including the River Severn, have their headwaters.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.