Pen y Fan
E152665
Pen y Fan is a prominent mountain in South Wales known for its sweeping views and popularity with hikers and outdoor enthusiasts.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pen y Fan canonical | 24 |
How this entity was disambiguated
This entity first appeared as the object of triple T1291770 — 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: Pen y Fan Context triple: [Brecon Beacons, highestPoint, Pen y Fan]
-
A.
Snowdon
Snowdon is the tallest and most famous mountain in Wales, renowned for its scenic hiking routes and panoramic views.
-
B.
Maerdy
Maerdy is a former coal mining village located at the head of the Rhondda Fach valley in Rhondda Cynon Taf, South Wales.
-
C.
Godre'r Graig
Godre'r Graig is a village and electoral ward in the Neath Port Talbot county borough of South Wales.
-
D.
Mam Tor
Mam Tor is a prominent hill in the Peak District of England, noted for its dramatic landslips, Iron Age hillfort, and extensive walking trails with panoramic views.
-
E.
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.
- 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: Pen y Fan Target entity description: Pen y Fan is a prominent mountain in South Wales known for its sweeping views and popularity with hikers and outdoor enthusiasts.
-
A.
Snowdon
Snowdon is the tallest and most famous mountain in Wales, renowned for its scenic hiking routes and panoramic views.
-
B.
Maerdy
Maerdy is a former coal mining village located at the head of the Rhondda Fach valley in Rhondda Cynon Taf, South Wales.
-
C.
Godre'r Graig
Godre'r Graig is a village and electoral ward in the Neath Port Talbot county borough of South Wales.
-
D.
Mam Tor
Mam Tor is a prominent hill in the Peak District of England, noted for its dramatic landslips, Iron Age hillfort, and extensive walking trails with panoramic views.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
mountain
ⓘ
peak ⓘ |
| connectedTo |
Corn Du
ⓘ
Cribyn ⓘ Fan y Big ⓘ |
| country | Wales ⓘ |
| elevation |
2907 feet
ⓘ
886 metres ⓘ |
| formedIn |
Devonian period
ⓘ
linked to:
Devonian Period
|
| geology | Old Red Sandstone ⓘ |
| gridReferenceUK | SO012215 ⓘ |
| hasClimate | upland oceanic climate ⓘ |
| hasDesignation |
National Trust property
ⓘ
Site of conservation interest ⓘ |
| hasHazard |
rapidly changing weather
ⓘ
strong winds ⓘ winter ice and snow ⓘ |
| hasProminence | about 672 metres ⓘ |
| hasRoute |
Pont ar Daf path
ⓘ
Storey Arms route ⓘ horseshoe ridge walk via Corn Du, Cribyn and Fan y Big ⓘ |
| hasSummitFeature |
National Trust summit marker
ⓘ
linked to:
National Trust
stone cairn ⓘ |
| hasWelshNameMeaning | Top peak ⓘ |
| highestPointOf |
Brecon Beacons
ⓘ
linked to:
Brecon Beacons in Wales
southern Britain ⓘ |
| locatedIn |
Bannau Brycheiniog National Park
ⓘ
Brecon Beacons ⓘ
linked to:
Brecon Beacons in Wales
Powys ⓘ South Wales ⓘ United Kingdom ⓘ Wales ⓘ |
| managedBy | National Trust ⓘ |
| mountainRange |
Brecon Beacons
ⓘ
linked to:
Brecon Beacons in Wales
|
| near |
Brecon
ⓘ
Merthyr Tydfil ⓘ |
| offers | panoramic views ⓘ |
| partOf | Bannau Brycheiniog National Park ⓘ |
| popularFor |
hiking
ⓘ
hillwalking ⓘ military training ⓘ trail running ⓘ |
| topographicMap |
OS Explorer OL12
ⓘ
OS Landranger 160 ⓘ |
| typicalAscentTime | around 2 to 3 hours from common start points ⓘ |
| usedBy | British Armed Forces ⓘ |
| usedFor | Special Forces selection marches ⓘ |
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: Pen y Fan Description of subject: Pen y Fan is a prominent mountain in South Wales known for its sweeping views and popularity with hikers and outdoor enthusiasts.
Referenced by (24)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Brecon Beacons in Wales
subject linked to:
historic county of Brecknockshire
subject linked to:
historic county of Brecknockshire