Llyn Alwen
E947553
Llyn Alwen is a small upland reservoir in Conwy County Borough, Wales, known for its scenic moorland setting and outdoor recreation opportunities such as walking and fishing.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Llyn Alwen canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11812829 — 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 Alwen Context triple: [Llyn Brenig, locatedNear, Llyn Alwen]
-
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 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.
-
C.
Llyn Brenig
Llyn Brenig is a large reservoir and recreational lake in North Wales, known for its scenic surroundings, walking trails, and trout fishing.
-
D.
Llyn Cau
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.
-
E.
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.
- 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 Alwen Target entity description: Llyn Alwen is a small upland reservoir in Conwy County Borough, Wales, known for its scenic moorland setting and outdoor recreation opportunities such as walking and fishing.
-
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 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.
-
C.
Llyn Brenig
Llyn Brenig is a large reservoir and recreational lake in North Wales, known for its scenic surroundings, walking trails, and trout fishing.
-
D.
Llyn Cau
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.
-
E.
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.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
reservoir
ⓘ
upland lake ⓘ |
| access | public footpaths ⓘ |
| basinCountry | United Kingdom ⓘ |
| country | Wales ⓘ |
| drainsTo | Afon Alwen ⓘ |
| ecosystemType | upland moorland ⓘ |
| hasActivity |
angling
ⓘ
birdwatching ⓘ cycling nearby ⓘ |
| hasFeature |
conifer plantations nearby
ⓘ
dam ⓘ gravel access tracks ⓘ moorland setting ⓘ upland scenery ⓘ |
| hasTrail | waymarked paths around reservoir ⓘ |
| hasWildlife |
trout
ⓘ
upland waterfowl ⓘ wading birds ⓘ |
| isPartOf |
Clwydian Range and Dee Valley area (broad region)
ⓘ
linked to:
Clwydian Range and Dee Valley AONB
|
| languageOfToponym | Welsh ⓘ |
| locatedIn |
Conwy County Borough
ⓘ
Denbighshire uplands ⓘ north-east Wales ⓘ |
| locatedNear |
A543 road
NERFINISHED
ⓘ
B4501 road ⓘ Llyn Brenig ⓘ |
| locatedOn | Mynydd Hiraethog ⓘ |
| managedBy | Dŵr Cymru Welsh Water ⓘ |
| nearbySettlement |
Cerrigydrudion
ⓘ
Pentre-llyn-cymmer ⓘ |
| partOf | Alwen catchment ⓘ |
| purpose | water supply ⓘ |
| region | Hiraethog Moor ⓘ |
| toponymMeaning | Alwen Lake ⓘ |
| usedFor |
fishing
ⓘ
recreation ⓘ walking ⓘ |
| watercourse | Afon Alwen ⓘ |
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 Alwen Description of subject: Llyn Alwen is a small upland reservoir in Conwy County Borough, Wales, known for its scenic moorland setting and outdoor recreation opportunities such as walking and fishing.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.