Lower Monumental Dam
E215460
Lower Monumental Dam is a hydroelectric concrete gravity dam on the lower Snake River in Washington State, forming Lake Herbert G. West and supporting power generation, navigation, and irrigation in the region.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lower Monumental Dam canonical | 14 |
| Lower Monumental Dam navigation lock | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1769895 — 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: Lower Monumental Dam Context triple: [Snake River, hasDam, Lower Monumental Dam]
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A.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
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B.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
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C.
Lower Granite Dam
Lower Granite Dam is a concrete gravity run-of-the-river dam on the lower Snake River in Washington State, forming Lower Granite Lake and supporting hydroelectric power generation and navigation.
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D.
Yellowtail Dam
Yellowtail Dam is a large concrete arch-gravity dam on the Bighorn River in Montana, United States, primarily used for hydroelectric power generation, irrigation, and flood control.
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E.
Denison Dam
Denison Dam is a large earthen dam on the Red River between Texas and Oklahoma, built for flood control, hydroelectric power generation, and water supply.
- 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: Lower Monumental Dam Target entity description: Lower Monumental Dam is a hydroelectric concrete gravity dam on the lower Snake River in Washington State, forming Lake Herbert G. West and supporting power generation, navigation, and irrigation in the region.
-
A.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
-
B.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
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C.
Lower Granite Dam
Lower Granite Dam is a concrete gravity run-of-the-river dam on the lower Snake River in Washington State, forming Lower Granite Lake and supporting hydroelectric power generation and navigation.
-
D.
Yellowtail Dam
Yellowtail Dam is a large concrete arch-gravity dam on the Bighorn River in Montana, United States, primarily used for hydroelectric power generation, irrigation, and flood control.
-
E.
Denison Dam
Denison Dam is a large earthen dam on the Red River between Texas and Oklahoma, built for flood control, hydroelectric power generation, and water supply.
- F. None of above. chosen
Statements (48)
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: Lower Monumental Dam Description of subject: Lower Monumental Dam is a hydroelectric concrete gravity dam on the lower Snake River in Washington State, forming Lake Herbert G. West and supporting power generation, navigation, and irrigation in the region.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.