Masonry Dam
E676813
Masonry Dam is a large early-20th-century concrete gravity dam on Washington’s Cedar River, built primarily for water supply and hydroelectric power generation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Masonry Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7607069 — 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: Masonry Dam Context triple: [Cedar River (Washington), hasDam, Masonry Dam]
-
A.
Keystone Dam
Keystone Dam is a major flood-control and hydroelectric dam in northeastern Oklahoma that forms Keystone Lake on the Arkansas River.
-
B.
Spillway
Spillway is a lesser-known work by modernist writer Djuna Barnes, reflecting her distinctive experimental style and themes.
-
C.
Great Stone Dam
The Great Stone Dam is a historic 19th-century granite dam in Lawrence, Massachusetts, built to harness the Merrimack River for industrial waterpower and central to the city’s mill-era development.
-
D.
Nimbus Dam
Nimbus Dam is a concrete gravity dam on the American River in California that forms Lake Natoma and helps regulate water flow, provide hydroelectric power, and support regional water supply and recreation.
-
E.
Forge Dam
Forge Dam is a popular recreational park and former industrial mill site along Porter Brook in Sheffield, England, known for its woodland walks, playground, and café.
- 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: Masonry Dam Target entity description: Masonry Dam is a large early-20th-century concrete gravity dam on Washington’s Cedar River, built primarily for water supply and hydroelectric power generation.
-
A.
Keystone Dam
Keystone Dam is a major flood-control and hydroelectric dam in northeastern Oklahoma that forms Keystone Lake on the Arkansas River.
-
B.
Spillway
Spillway is a lesser-known work by modernist writer Djuna Barnes, reflecting her distinctive experimental style and themes.
-
C.
Great Stone Dam
The Great Stone Dam is a historic 19th-century granite dam in Lawrence, Massachusetts, built to harness the Merrimack River for industrial waterpower and central to the city’s mill-era development.
-
D.
Nimbus Dam
Nimbus Dam is a concrete gravity dam on the American River in California that forms Lake Natoma and helps regulate water flow, provide hydroelectric power, and support regional water supply and recreation.
-
E.
Forge Dam
Forge Dam is a popular recreational park and former industrial mill site along Porter Brook in Sheffield, England, known for its woodland walks, playground, and café.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
concrete gravity dam
ⓘ
hydroelectric dam ⓘ water supply dam ⓘ |
| constructionMaterial | concrete ⓘ |
| continent | North America ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| creates | reservoir ⓘ |
| damType | gravity dam ⓘ |
| designedFor | long-term water storage ⓘ |
| energySource | hydropower ⓘ |
| era | early 20th century ⓘ |
| hasComponent |
intake works
ⓘ
outlet works ⓘ powerhouse ⓘ spillway ⓘ |
| locatedIn |
United States of America
ⓘ
surface form:
United States
Washington ⓘ
surface form:
Washington State
|
| locatedOnRiver | Cedar River NERFINISHED ⓘ |
| operatedBy | public utility ⓘ |
| ownedBy | public authority ⓘ |
| partOf | Cedar River water supply system NERFINISHED ⓘ |
| primaryFunction |
hydroelectric power generation
ⓘ
municipal water supply ⓘ |
| purpose |
power generation
ⓘ
river regulation ⓘ water storage ⓘ |
| regionServed | Seattle metropolitan area NERFINISHED ⓘ |
| usedFor |
drinking water supply
ⓘ
electricity production ⓘ flood control support ⓘ |
| watercourse | Cedar River 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: Masonry Dam Description of subject: Masonry Dam is a large early-20th-century concrete gravity dam on Washington’s Cedar River, built primarily for water supply and hydroelectric power generation.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Cedar River (Washington)