Foel Cwmcerwyn
E519372
Foel Cwmcerwyn is a prominent mountain in Pembrokeshire, Wales, known as the county’s highest summit and a notable viewpoint within the Preseli range.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Foel Cwmcerwyn canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5413938 — 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: Foel Cwmcerwyn Context triple: [Preseli Hills, hasHighestPoint, Foel Cwmcerwyn]
-
A.
Rhinog Fawr
Rhinog Fawr is a rugged, rocky mountain in Snowdonia, Wales, known for its challenging terrain and prominent summit within the Rhinogydd range.
-
B.
Taf Fawr
Taf Fawr is one of the principal headwater streams of the River Taff in South Wales, flowing through the Brecon Beacons before joining with other tributaries to form the main river.
-
C.
Llyn Padarn
Llyn Padarn is a glacially formed lake in North Wales, renowned for its scenic mountain backdrop near Llanberis and its popularity for outdoor recreation such as kayaking, swimming, and walking.
-
D.
Aran Fawddwy
Aran Fawddwy is a prominent mountain in southern Snowdonia, Wales, known for being one of the highest peaks in the region outside the main Snowdon massif.
-
E.
Yr Wyddfa
Yr Wyddfa is the Welsh name for Snowdon, the highest and one of the most iconic mountains in Wales and the entire British Isles.
- 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: Foel Cwmcerwyn Target entity description: Foel Cwmcerwyn is a prominent mountain in Pembrokeshire, Wales, known as the county’s highest summit and a notable viewpoint within the Preseli range.
-
A.
Rhinog Fawr
Rhinog Fawr is a rugged, rocky mountain in Snowdonia, Wales, known for its challenging terrain and prominent summit within the Rhinogydd range.
-
B.
Taf Fawr
Taf Fawr is one of the principal headwater streams of the River Taff in South Wales, flowing through the Brecon Beacons before joining with other tributaries to form the main river.
-
C.
Llyn Padarn
Llyn Padarn is a glacially formed lake in North Wales, renowned for its scenic mountain backdrop near Llanberis and its popularity for outdoor recreation such as kayaking, swimming, and walking.
-
D.
Aran Fawddwy
Aran Fawddwy is a prominent mountain in southern Snowdonia, Wales, known for being one of the highest peaks in the region outside the main Snowdon massif.
-
E.
Yr Wyddfa
Yr Wyddfa is the Welsh name for Snowdon, the highest and one of the most iconic mountains in Wales and the entire British Isles.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf | mountain ⓘ |
| access | public footpaths ⓘ |
| category |
Highest points of Welsh counties
ⓘ
Marilyns of Wales NERFINISHED ⓘ Mountains and hills of Pembrokeshire ⓘ |
| country | Wales ⓘ |
| elevation |
1759 feet
ⓘ
536 metres ⓘ |
| geology | Preseli dolerite NERFINISHED ⓘ |
| gridReferenceUK | SN094322 ⓘ |
| hasFeature |
communication masts
ⓘ
trig point ⓘ |
| hasViewOf |
Ceredigion coast
NERFINISHED
ⓘ
Irish Sea NERFINISHED ⓘ |
| hasWelshNameMeaning | bare hill of the valley of the alder ⓘ |
| highestPointOf | Pembrokeshire NERFINISHED ⓘ |
| listing |
County Top
ⓘ
Marilyn ⓘ |
| locatedIn |
Pembrokeshire
NERFINISHED
ⓘ
Preseli Hills NERFINISHED ⓘ Preseli range NERFINISHED ⓘ |
| locatedOn | Pembrokeshire Coast National Park ridge NERFINISHED ⓘ |
| near |
Mynachlog-ddu
NERFINISHED
ⓘ
Rosebush NERFINISHED ⓘ |
| overlooks |
Cardigan Bay
NERFINISHED
ⓘ
Preseli Hills NERFINISHED ⓘ north Pembrokeshire NERFINISHED ⓘ |
| partOf | Pembrokeshire Coast National Park NERFINISHED ⓘ |
| prominence |
1129 feet
ⓘ
344 metres ⓘ |
| range | Preseli Hills NERFINISHED ⓘ |
| region | southwest Wales NERFINISHED ⓘ |
| surfaceType | moorland ⓘ |
| topographicMap |
OS Explorer OL35
NERFINISHED
ⓘ
OS Landranger 145 NERFINISHED ⓘ |
| usedFor |
hiking
ⓘ
hillwalking ⓘ viewpoint ⓘ |
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: Foel Cwmcerwyn Description of subject: Foel Cwmcerwyn is a prominent mountain in Pembrokeshire, Wales, known as the county’s highest summit and a notable viewpoint within the Preseli range.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.