Llyn Idwal
E251428
Llyn Idwal is a small glacial lake in the Glyderau range of Snowdonia, Wales, renowned for its dramatic surrounding cliffs and popular hiking routes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Llyn Idwal canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T2156570 — 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 Idwal Context triple: [Snowdonia, contains, Llyn Idwal]
-
A.
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.
-
B.
Llyn Tegid
Llyn Tegid, also known as Bala Lake, is the largest natural lake in Wales, renowned for its scenic beauty and unique aquatic wildlife.
-
C.
Llyn Ogwen
Llyn Ogwen is a scenic glacial lake in the mountains of Snowdonia in North Wales, popular for hiking, climbing, and dramatic views.
-
D.
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.
-
E.
Derwentwater
Derwentwater is a scenic lake in England’s Lake District, renowned for its surrounding fells, wooded shores, and popular walking and boating opportunities.
- 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 Idwal Target entity description: Llyn Idwal is a small glacial lake in the Glyderau range of Snowdonia, Wales, renowned for its dramatic surrounding cliffs and popular hiking routes.
-
A.
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.
-
B.
Llyn Tegid
Llyn Tegid, also known as Bala Lake, is the largest natural lake in Wales, renowned for its scenic beauty and unique aquatic wildlife.
-
C.
Llyn Ogwen
Llyn Ogwen is a scenic glacial lake in the mountains of Snowdonia in North Wales, popular for hiking, climbing, and dramatic views.
-
D.
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.
-
E.
Derwentwater
Derwentwater is a scenic lake in England’s Lake District, renowned for its surrounding fells, wooded shores, and popular walking and boating opportunities.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
glacial lake
ⓘ
lake in Wales ⓘ |
| accessedFrom | Ogwen Cottage ⓘ |
| category |
Glacial lakes of Wales
ⓘ
Lakes of Snowdonia ⓘ Tourist attractions in Gwynedd ⓘ |
| country | Wales ⓘ |
| elevation |
approximately 1224 feet above sea level
ⓘ
approximately 373 metres above sea level ⓘ |
| formedBy | glacial erosion ⓘ |
| geologicalType |
corrie lake
ⓘ
tarn ⓘ |
| hasFeature |
clear water
ⓘ
glacial moraines ⓘ rocky shore ⓘ steep cliffs ⓘ |
| hasInflow | mountain streams ⓘ |
| hasOutflow | Afon Idwal ⓘ |
| hasTrail | circular path around the lake ⓘ |
| hasViewOf |
Devil’s Kitchen
ⓘ
Glyderau ⓘ
surface form:
Glyderau peaks
Idwal Slabs ⓘ Y Garn ⓘ |
| knownFor |
classic example of a glacial cirque
ⓘ
dramatic surrounding cliffs ⓘ glacial landforms ⓘ popular hiking routes ⓘ rock climbing nearby ⓘ |
| languageOfName | Welsh ⓘ |
| locatedIn |
Cwm Idwal
ⓘ
Glyderau ⓘ Gwynedd ⓘ Snowdonia ⓘ United Kingdom ⓘ Wales ⓘ |
| nameMeaning | Idwal’s lake ⓘ |
| near |
Glyder Fach
ⓘ
Glyder Fawr ⓘ Ogwen Valley ⓘ Tryfan ⓘ |
| partOf |
Snowdonia
ⓘ
surface form:
Snowdonia National Park
|
| popularActivity |
hiking
ⓘ
nature observation ⓘ photography ⓘ scrambling ⓘ walking ⓘ |
| protectedArea |
Snowdonia
ⓘ
surface form:
Snowdonia National Park
|
| region | North Wales ⓘ |
| touristAttraction | yes ⓘ |
| 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 Idwal Description of subject: Llyn Idwal is a small glacial lake in the Glyderau range of Snowdonia, Wales, renowned for its dramatic surrounding cliffs and popular hiking routes.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Glyderau