Llyn Cau
E874710
Llyn Cau is a glacial lake nestled in a steep-sided corrie on the slopes of Cadair Idris in Snowdonia, Wales, renowned for its dramatic mountain scenery.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Llyn Cau canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T10313647 — 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: Llyn Cau Context triple: [Cadair Idris, hasLake, Llyn Cau]
-
A.
Llyn Dinas
Llyn Dinas is a scenic natural lake in the Snowdonia region of North Wales, popular for walking, photography, and its surrounding mountainous landscapes.
-
B.
Llyn Llydaw
Llyn Llydaw is a glacial lake on the eastern flanks of Snowdon in Snowdonia National Park, Wales, renowned for its scenic mountain setting and association with local legends.
-
C.
Llyn Hywel
Llyn Hywel is a remote mountain lake in the Rhinogydd range of Snowdonia, Wales, known for its dramatic rocky surroundings and scenic views.
-
D.
Llyn y Fan Fach
Llyn y Fan Fach is a remote glacial lake in the Brecon Beacons National Park in Wales, famed for its dramatic mountain backdrop and the Welsh legend of the Lady of the Lake.
-
E.
Llyn Gwynant
Llyn Gwynant is a scenic lake in the Snowdonia region of North Wales, popular for its surrounding mountain views and outdoor activities such as hiking, kayaking, and camping.
- 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: Llyn Cau Target entity description: Llyn Cau is a glacial lake nestled in a steep-sided corrie on the slopes of Cadair Idris in Snowdonia, Wales, renowned for its dramatic mountain scenery.
-
A.
Llyn Dinas
Llyn Dinas is a scenic natural lake in the Snowdonia region of North Wales, popular for walking, photography, and its surrounding mountainous landscapes.
-
B.
Llyn Llydaw
Llyn Llydaw is a glacial lake on the eastern flanks of Snowdon in Snowdonia National Park, Wales, renowned for its scenic mountain setting and association with local legends.
-
C.
Llyn Hywel
Llyn Hywel is a remote mountain lake in the Rhinogydd range of Snowdonia, Wales, known for its dramatic rocky surroundings and scenic views.
-
D.
Llyn y Fan Fach
Llyn y Fan Fach is a remote glacial lake in the Brecon Beacons National Park in Wales, famed for its dramatic mountain backdrop and the Welsh legend of the Lady of the Lake.
-
E.
Llyn Gwynant
Llyn Gwynant is a scenic lake in the Snowdonia region of North Wales, popular for its surrounding mountain views and outdoor activities such as hiking, kayaking, and camping.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
corrie lake
ⓘ
glacial lake ⓘ |
| accessRoute | footpath from Minffordd ⓘ |
| administrativeArea |
Gwynedd Council area
ⓘ
linked to:
Gwynedd Council
|
| basinCountry |
United Kingdom
ⓘ
Wales ⓘ |
| climateZone | temperate maritime ⓘ |
| conservationStatus | within protected landscape (national park) ⓘ |
| containedInFeature |
cwm (corrie) of Cadair Idris
ⓘ
linked to:
Cwm Cau
|
| country | United Kingdom ⓘ |
| drainageBasin | Afon Dysynni catchment (approximate region) ⓘ |
| ecosystemType | upland lake ecosystem ⓘ |
| formedDuring | Pleistocene glaciations ⓘ |
| geologicalOrigin | glacial erosion ⓘ |
| hasHazard |
rapidly changing mountain weather
ⓘ
steep slopes ⓘ |
| hasRecreationalUse | informal swimming (cold water) ⓘ |
| hasShoreCharacteristic | rocky shores ⓘ |
| hasSurroundingFeature | steep mountain cliffs ⓘ |
| hasSurroundingVegetation |
heathland
ⓘ
montane grassland ⓘ |
| hikingDestination | true ⓘ |
| landformType | corrie ⓘ |
| languageOfToponym | Welsh ⓘ |
| locatedIn |
Cadair Idris
ⓘ
Gwynedd ⓘ Snowdonia ⓘ Wales ⓘ |
| mountainRange |
Cadair Idris massif
ⓘ
linked to:
Cadair Idris
|
| nameMeaning | "enclosed lake" or "hollow lake" in Welsh ⓘ |
| near |
Dolgellau
ⓘ
Tal-y-llyn ⓘ
linked to:
Tal-y-llyn Lake
|
| notableFor |
dramatic mountain scenery
ⓘ
steep-sided cirque walls ⓘ |
| onRouteOf | Cadair Idris summit paths ⓘ |
| partOf |
Snowdonia National Park
ⓘ
linked to:
Snowdonia
|
| popularActivity |
hillwalking
ⓘ
photography ⓘ |
| protectedArea |
Snowdonia National Park
ⓘ
linked to:
Snowdonia
|
| region | North Wales ⓘ |
| regionType | mountain lake ⓘ |
| tourism | local landmark in Snowdonia ⓘ |
| viewOf |
Cadair Idris cliffs
ⓘ
linked to:
Cadair Idris
|
| waterType | freshwater ⓘ |
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: Llyn Cau Description of subject: Llyn Cau is a glacial lake nestled in a steep-sided corrie on the slopes of Cadair Idris in Snowdonia, Wales, renowned for its dramatic mountain scenery.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.