Hoover Dam (Ohio)
E922359
Hoover Dam (Ohio) is a concrete gravity dam on Big Walnut Creek in central Ohio that creates the Hoover Reservoir, a major source of drinking water and recreation for the Columbus metropolitan area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hoover Dam (Ohio) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11379839 — 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: Hoover Dam (Ohio) Context triple: [Hoover Reservoir, formedBy, Hoover Dam (Ohio)]
-
A.
Mayfield Dam
Mayfield Dam is a hydroelectric dam in Washington State that forms Mayfield Lake and generates power on the Cowlitz River.
-
B.
Pyramid Dam
Pyramid Dam is a major earthfill dam in Southern California that forms Pyramid Lake on Piru Creek, serving water storage, flood control, and recreation purposes as part of the State Water Project.
-
C.
Kanopolis Dam
Kanopolis Dam is a large earthen flood-control and irrigation dam in central Kansas that forms Kanopolis Lake, a popular site for recreation and wildlife habitat.
-
D.
Kentucky Dam
Kentucky Dam is a major hydroelectric and flood-control dam in western Kentucky that forms Kentucky Lake on the Tennessee River.
-
E.
Coolidge Dam
Coolidge Dam is a large concrete multiple-arch dam in Arizona that impounds the Gila River to form San Carlos Lake for irrigation, flood control, and water storage.
- 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: Hoover Dam (Ohio) Target entity description: Hoover Dam (Ohio) is a concrete gravity dam on Big Walnut Creek in central Ohio that creates the Hoover Reservoir, a major source of drinking water and recreation for the Columbus metropolitan area.
-
A.
Mayfield Dam
Mayfield Dam is a hydroelectric dam in Washington State that forms Mayfield Lake and generates power on the Cowlitz River.
-
B.
Pyramid Dam
Pyramid Dam is a major earthfill dam in Southern California that forms Pyramid Lake on Piru Creek, serving water storage, flood control, and recreation purposes as part of the State Water Project.
-
C.
Kanopolis Dam
Kanopolis Dam is a large earthen flood-control and irrigation dam in central Kansas that forms Kanopolis Lake, a popular site for recreation and wildlife habitat.
-
D.
Kentucky Dam
Kentucky Dam is a major hydroelectric and flood-control dam in western Kentucky that forms Kentucky Lake on the Tennessee River.
-
E.
Coolidge Dam
Coolidge Dam is a large concrete multiple-arch dam in Arizona that impounds the Gila River to form San Carlos Lake for irrigation, flood control, and water storage.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
concrete gravity dam
ⓘ
dam ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| createsReservoir | Hoover Reservoir NERFINISHED ⓘ |
| hasReservoir | Hoover Reservoir NERFINISHED ⓘ |
| impounds | Hoover Reservoir NERFINISHED ⓘ |
| isUpstreamOf | Columbus, Ohio NERFINISHED ⓘ |
| locatedIn |
Ohio
ⓘ
United States of America ⓘ
surface form:
United States
|
| locatedInRegion | central Ohio NERFINISHED ⓘ |
| locatedNear | Columbus, Ohio NERFINISHED ⓘ |
| locatedOnWaterway | Big Walnut Creek NERFINISHED ⓘ |
| material | concrete ⓘ |
| namedAfter | Hoover Reservoir NERFINISHED ⓘ |
| partOf | Columbus metropolitan area water system NERFINISHED ⓘ |
| purpose |
flood control
ⓘ
municipal water supply ⓘ recreation ⓘ |
| regionServed |
Delaware County, Ohio
NERFINISHED
ⓘ
Franklin County, Ohio NERFINISHED ⓘ |
| reservoirUse |
drinking water
ⓘ
recreation ⓘ |
| river | Big Walnut Creek NERFINISHED ⓘ |
| structureType | gravity dam ⓘ |
| usedFor |
boating
ⓘ
fishing ⓘ wildlife observation ⓘ |
| waterSupplyFor | Columbus metropolitan area 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: Hoover Dam (Ohio) Description of subject: Hoover Dam (Ohio) is a concrete gravity dam on Big Walnut Creek in central Ohio that creates the Hoover Reservoir, a major source of drinking water and recreation for the Columbus metropolitan area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.