Marathon Reservoir
E295874
Marathon Reservoir is an artificial lake in Greece that serves as a major water supply source for the Athens metropolitan area.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Marathon Reservoir canonical | 2 |
| Marathonas Reservoir | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2680517 — 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: Marathon Reservoir Context triple: [Marathon, nearbyFeature, Marathon Reservoir]
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A.
Greenfield Reservoir
Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
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B.
Cannonsville Reservoir
Cannonsville Reservoir is a major New York City water supply reservoir located in the western Catskill Mountains on the West Branch of the Delaware River.
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C.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
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D.
Crystal Springs Reservoir
Crystal Springs Reservoir is a large artificial lake system on the San Francisco Peninsula that serves as a major drinking water source and scenic open-space area for the region.
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E.
Silver Lake Reservoir
Silver Lake Reservoir is a man-made urban lake and surrounding recreational area in Los Angeles, California, known for its walking paths, scenic views, and role as a local water storage facility.
- 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: Marathon Reservoir Target entity description: Marathon Reservoir is an artificial lake in Greece that serves as a major water supply source for the Athens metropolitan area.
-
A.
Greenfield Reservoir
Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
-
B.
Cannonsville Reservoir
Cannonsville Reservoir is a major New York City water supply reservoir located in the western Catskill Mountains on the West Branch of the Delaware River.
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C.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
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D.
Crystal Springs Reservoir
Crystal Springs Reservoir is a large artificial lake system on the San Francisco Peninsula that serves as a major drinking water source and scenic open-space area for the region.
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E.
Silver Lake Reservoir
Silver Lake Reservoir is a man-made urban lake and surrounding recreational area in Los Angeles, California, known for its walking paths, scenic views, and role as a local water storage facility.
- F. None of above. chosen
Statements (44)
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: Marathon Reservoir Description of subject: Marathon Reservoir is an artificial lake in Greece that serves as a major water supply source for the Athens metropolitan area.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Marathon Reservoir