John Day Dam
E397919
John Day Dam is a large hydroelectric dam on the Columbia River in the Pacific Northwest, known for its significant power generation capacity and role in regional navigation and water management.
All labels observed (1)
| Label | Occurrences |
|---|---|
| John Day Dam canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T3629267 — 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: John Day Dam Context triple: [The Dalles Dam, downstreamFrom, John Day Dam]
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A.
Bonneville Dam
Bonneville Dam is a major hydroelectric and navigation dam on the Columbia River in the Pacific Northwest, known for power generation, fish ladders, and its role in regional river management.
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B.
Hells Canyon Dam
Hells Canyon Dam is a hydroelectric concrete arch-gravity dam on the Snake River in the Hells Canyon region along the Oregon–Idaho border in the United States.
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C.
McNary Dam
McNary Dam is a large hydroelectric dam and navigation lock complex on the Columbia River in the Pacific Northwest of the United States.
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D.
The Dalles Dam
The Dalles Dam is a large hydroelectric dam and navigation facility on the Columbia River in the Pacific Northwest, known for its significant power generation and impact on regional river ecosystems and communities.
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E.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay Area.
- 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: John Day Dam Target entity description: John Day Dam is a large hydroelectric dam on the Columbia River in the Pacific Northwest, known for its significant power generation capacity and role in regional navigation and water management.
-
A.
Bonneville Dam
Bonneville Dam is a major hydroelectric and navigation dam on the Columbia River in the Pacific Northwest, known for power generation, fish ladders, and its role in regional river management.
-
B.
Hells Canyon Dam
Hells Canyon Dam is a hydroelectric concrete arch-gravity dam on the Snake River in the Hells Canyon region along the Oregon–Idaho border in the United States.
-
C.
McNary Dam
McNary Dam is a large hydroelectric dam and navigation lock complex on the Columbia River in the Pacific Northwest of the United States.
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D.
The Dalles Dam
The Dalles Dam is a large hydroelectric dam and navigation facility on the Columbia River in the Pacific Northwest, known for its significant power generation and impact on regional river ecosystems and communities.
-
E.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay Area.
- F. None of above. chosen
Statements (47)
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: John Day Dam Description of subject: John Day Dam is a large hydroelectric dam on the Columbia River in the Pacific Northwest, known for its significant power generation capacity and role in regional navigation and water management.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.