Thirlmere
E415405
Thirlmere is a reservoir in England’s Lake District, known for its scenic mountain surroundings and role in supplying water to the city of Manchester.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Thirlmere canonical | 4 |
| Thirlmere Valley | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4098709 — 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: Thirlmere Context triple: [Helvellyn, hasLakeView, Thirlmere]
-
A.
Thirlmere
Thirlmere is a small town in New South Wales, Australia, known for its historic railway heritage and proximity to the Thirlmere Lakes.
-
B.
Malham Tarn
Malham Tarn is a glacial lake in the Yorkshire Dales, England, renowned for its limestone scenery, rich wildlife, and status as a National Nature Reserve.
-
C.
Windermere
Windermere is the largest natural lake in England and a popular tourist destination in the Lake District known for its scenic beauty and boating activities.
-
D.
Grasmere Lake
Grasmere Lake is a picturesque small lake in England’s Lake District, renowned for its scenic beauty and association with the poet William Wordsworth.
-
E.
Coniston Water
Coniston Water is a scenic lake in England’s Lake District, known for its dramatic surrounding fells, boating, and literary and historical associations.
- 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: Thirlmere Target entity description: Thirlmere is a reservoir in England’s Lake District, known for its scenic mountain surroundings and role in supplying water to the city of Manchester.
-
A.
Thirlmere
Thirlmere is a small town in New South Wales, Australia, known for its historic railway heritage and proximity to the Thirlmere Lakes.
-
B.
Malham Tarn
Malham Tarn is a glacial lake in the Yorkshire Dales, England, renowned for its limestone scenery, rich wildlife, and status as a National Nature Reserve.
-
C.
Windermere
Windermere is the largest natural lake in England and a popular tourist destination in the Lake District known for its scenic beauty and boating activities.
-
D.
Grasmere Lake
Grasmere Lake is a picturesque small lake in England’s Lake District, renowned for its scenic beauty and association with the poet William Wordsworth.
-
E.
Coniston Water
Coniston Water is a scenic lake in England’s Lake District, known for its dramatic surrounding fells, boating, and literary and historical associations.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
lake
ⓘ
reservoir ⓘ |
| aqueductName | Thirlmere Aqueduct ⓘ |
| basinCountry | United Kingdom ⓘ |
| catchmentArea | eastern slopes of Helvellyn range ⓘ |
| completedIn | 1894 ⓘ |
| constructionStartDate | late 19th century ⓘ |
| country | United Kingdom ⓘ |
| createdBy | Manchester Corporation ⓘ |
| damType | masonry dam ⓘ |
| elevationAboveSeaLevel | approximately 150 m ⓘ |
| formedBy | damming of natural lakes ⓘ |
| formedFrom |
Leathes Water
ⓘ
Wythburn Water ⓘ |
| hasDam | Thirlmere Dam ⓘ |
| hasIsland | Deer Island ⓘ |
| hasNearbySettlement |
Legburthwaite
ⓘ
Wythburn ⓘ |
| hasRoadAlongShore | A591 ⓘ |
| hasWalkingRoute |
access to Helvellyn ridge
ⓘ
lakeside paths ⓘ |
| historicalControversy | opposition from Lake District conservationists ⓘ |
| length | approximately 6 km ⓘ |
| locatedIn |
Cumbria
ⓘ
England ⓘ Lake District ⓘ |
| locatedInNationalPark |
Lake District National Park
ⓘ
linked to:
Lake District
|
| locatedNear |
Dunmail Raise
ⓘ
linked to:
Dunmail Raise area
Helvellyn ⓘ Keswick ⓘ |
| locatedOn | eastern side of the Cumbrian mountains ⓘ |
| managedBy | United Utilities ⓘ |
| maximumDepth | approximately 38 m ⓘ |
| notableFor |
role in supplying water to Manchester
ⓘ
scenic mountain surroundings ⓘ |
| originalValleyName |
Thirlmere Valley
ⓘ
linked to:
Thirlmere
|
| outflow | River Cocker NERFINISHED ⓘ |
| partOf |
Thirlmere Valley
ⓘ
linked to:
Thirlmere
|
| surfaceArea | approximately 3.3 km² ⓘ |
| surroundedBy |
conifer plantations
ⓘ
mountains ⓘ |
| usedFor |
drinking water supply
ⓘ
fishing ⓘ recreation ⓘ walking ⓘ |
| waterSupplierFor | Manchester ⓘ |
| waterTransportMethodToManchester | aqueduct ⓘ |
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: Thirlmere Description of subject: Thirlmere is a reservoir in England’s Lake District, known for its scenic mountain surroundings and role in supplying water to the city of Manchester.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Thirlmere