River Claerwen
E846664
River Claerwen is a river in mid Wales that flows through the Elan Valley, feeding major reservoirs within the region’s renowned water supply and scenic landscape.
All labels observed (1)
| Label | Occurrences |
|---|---|
| River Claerwen canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T10160304 — 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: River Claerwen Context triple: [Elan Valley reservoirs, waterSource, River Claerwen]
-
A.
River Gwendraeth
The River Gwendraeth is a river in Carmarthenshire, Wales, known for its twin branches that flow through rural valleys before joining the Burry estuary near the town of Kidwelly.
-
B.
River Cleddau
The River Cleddau is a river system in Pembrokeshire, Wales, whose Eastern and Western branches meet to form the Milford Haven Waterway before reaching the Irish Sea.
-
C.
River Lledr
River Lledr is a scenic river in Snowdonia, North Wales, known for flowing through wooded valleys and picturesque landscapes before joining the River Conwy.
-
D.
Afon Crawnon
Afon Crawnon is a small river in Powys, Wales, that flows through the Brecon Beacons to join the River Usk.
-
E.
River Garw
The River Garw is a river in Bridgend County Borough, South Wales, flowing through the Garw Valley and historically associated with local coal mining communities.
- 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: River Claerwen Target entity description: River Claerwen is a river in mid Wales that flows through the Elan Valley, feeding major reservoirs within the region’s renowned water supply and scenic landscape.
-
A.
River Gwendraeth
The River Gwendraeth is a river in Carmarthenshire, Wales, known for its twin branches that flow through rural valleys before joining the Burry estuary near the town of Kidwelly.
-
B.
River Cleddau
The River Cleddau is a river system in Pembrokeshire, Wales, whose Eastern and Western branches meet to form the Milford Haven Waterway before reaching the Irish Sea.
-
C.
River Lledr
River Lledr is a scenic river in Snowdonia, North Wales, known for flowing through wooded valleys and picturesque landscapes before joining the River Conwy.
-
D.
Afon Crawnon
Afon Crawnon is a small river in Powys, Wales, that flows through the Brecon Beacons to join the River Usk.
-
E.
River Garw
The River Garw is a river in Bridgend County Borough, South Wales, flowing through the Garw Valley and historically associated with local coal mining communities.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| associatedWith | Elan Valley Reservoirs NERFINISHED ⓘ |
| basinCountry | United Kingdom ⓘ |
| country | Wales ⓘ |
| feeds | Claerwen Reservoir NERFINISHED ⓘ |
| flowsDirection | generally eastward ⓘ |
| flowsInto | Claerwen Reservoir NERFINISHED ⓘ |
| flowsThrough | Elan Valley NERFINISHED ⓘ |
| hasEcosystemType | upland river ecosystem ⓘ |
| hasLandscapeType | scenic landscape ⓘ |
| hasNearbyStructure | Claerwen Dam NERFINISHED ⓘ |
| hasNotableFeature | remote upland valley ⓘ |
| hasReputation | scenic and unspoilt ⓘ |
| locatedIn |
Elan Valley
NERFINISHED
ⓘ
Mid Wales NERFINISHED ⓘ Powys NERFINISHED ⓘ |
| managedBy | Dŵr Cymru Welsh Water NERFINISHED ⓘ |
| partOf | River Wye catchment ⓘ |
| region | Ceredigion and Powys border area ⓘ |
| sourceRegion | Cambrian Mountains NERFINISHED ⓘ |
| tributaryOf | River Elan NERFINISHED ⓘ |
| usedFor |
angling
ⓘ
recreation ⓘ water supply ⓘ |
| waterSystem | Elan Valley water supply system NERFINISHED ⓘ |
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: River Claerwen Description of subject: River Claerwen is a river in mid Wales that flows through the Elan Valley, feeding major reservoirs within the region’s renowned water supply and scenic landscape.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.