Pen y Gadair Fawr
E647812
Pen y Gadair Fawr is a prominent hill and popular walking summit in the Black Mountains of southeast Wales, known for its expansive views over the surrounding upland landscape.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pen y Gadair Fawr canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T7179193 — 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 Gadair Fawr Context triple: [Black Mountains, contains, Pen y Gadair Fawr]
-
A.
Pen y Fan
Pen y Fan is a prominent mountain in South Wales known for its sweeping views and popularity with hikers and outdoor enthusiasts.
-
B.
Moel Ysgyfarnogod
Moel Ysgyfarnogod is a mountain in the Rhinogydd range of Snowdonia, north Wales, known for its rugged terrain and panoramic views.
-
C.
Moel Famau
Moel Famau is a prominent hill in northeast Wales known for its distinctive Jubilee Tower ruins and panoramic views across the Clwydian Range.
-
D.
Eryri
Eryri is the Welsh name for Snowdonia, a mountainous national park in northwest Wales known for its rugged peaks, lakes, and scenic landscapes.
-
E.
Moel Llyfnant
Moel Llyfnant is a mountain in Snowdonia, Wales, known as a remote, grassy peak often climbed in conjunction with nearby Arenig Fawr.
- 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 Gadair Fawr Target entity description: Pen y Gadair Fawr is a prominent hill and popular walking summit in the Black Mountains of southeast Wales, known for its expansive views over the surrounding upland landscape.
-
A.
Pen y Fan
Pen y Fan is a prominent mountain in South Wales known for its sweeping views and popularity with hikers and outdoor enthusiasts.
-
B.
Moel Ysgyfarnogod
Moel Ysgyfarnogod is a mountain in the Rhinogydd range of Snowdonia, north Wales, known for its rugged terrain and panoramic views.
-
C.
Moel Famau
Moel Famau is a prominent hill in northeast Wales known for its distinctive Jubilee Tower ruins and panoramic views across the Clwydian Range.
-
D.
Eryri
Eryri is the Welsh name for Snowdonia, a mountainous national park in northwest Wales known for its rugged peaks, lakes, and scenic landscapes.
-
E.
Moel Llyfnant
Moel Llyfnant is a mountain in Snowdonia, Wales, known as a remote, grassy peak often climbed in conjunction with nearby Arenig Fawr.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
geographical feature
ⓘ
hill ⓘ |
| access | open access land ⓘ |
| climate | cool wet upland climate ⓘ |
| country | Wales ⓘ |
| elevation |
800 m
ⓘ
approximately 2625 ft ⓘ |
| environment | upland moorland ⓘ |
| geology | Old Red Sandstone ⓘ |
| gridReference | SO 229300 ⓘ |
| hasFootpath |
public rights of way
ⓘ
unmarked hill paths ⓘ |
| hasLanguageOfToponym | Welsh ⓘ |
| hasSummitFeature |
cairn
ⓘ
shelter ⓘ |
| isPopularFor |
hiking
ⓘ
hillwalking ⓘ recreational walking ⓘ |
| knownFor |
expansive views
ⓘ
upland landscape scenery ⓘ |
| listing |
Hewitt
ⓘ
HuMP ⓘ Nuttall ⓘ |
| locatedIn |
Black Mountains
ⓘ
United Kingdom ⓘ Wales ⓘ southeast Wales ⓘ |
| mountainRange | Black Mountains ⓘ |
| nameMeaning | "top of the big chair" in Welsh ⓘ |
| nearestSettlement |
Crickhowell
ⓘ
Talgarth ⓘ |
| partOf |
Brecon Beacons National Park
ⓘ
linked to:
Brecon Beacons in Wales
|
| prominence | approximately 184 m ⓘ |
| region | Powys ⓘ |
| relativeLocation |
in the eastern Brecon Beacons area
ⓘ
north of Waun Fach ⓘ |
| shape | broad rounded summit ⓘ |
| terrain |
grassy summit
ⓘ
peaty upland ⓘ |
| topographicMap |
OS Explorer OL13
ⓘ
OS Landranger 161 ⓘ |
| usedFor | outdoor recreation ⓘ |
| viewOverlooks |
Black Mountains
ⓘ
Mynydd Du uplands ⓘ |
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 Gadair Fawr Description of subject: Pen y Gadair Fawr is a prominent hill and popular walking summit in the Black Mountains of southeast Wales, known for its expansive views over the surrounding upland landscape.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.