Marmet Lock and Dam
E877733
Marmet Lock and Dam is a navigation and flood-control structure on the Kanawha River in West Virginia that helps maintain a stable waterway for commercial and recreational traffic.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Marmet Lock and Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10633774 — 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: Marmet Lock and Dam Context triple: [Kanawha River, hasLockAndDam, Marmet Lock and Dam]
-
A.
Murray Lock and Dam
Murray Lock and Dam is a navigation and flood-control structure on the Arkansas River near Little Rock, Arkansas, that helps regulate river flow and support commercial barge traffic.
-
B.
Winfield Lock and Dam
Winfield Lock and Dam is a navigation and flood-control structure on the Kanawha River in West Virginia that helps regulate river levels and facilitate barge traffic.
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C.
Wheeler Lock and Dam
Wheeler Lock and Dam is a major navigation and hydroelectric structure on the Tennessee River in northern Alabama, forming Wheeler Lake and facilitating river traffic and power generation.
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D.
McNary Lock and Dam
McNary Lock and Dam is a navigation lock facility integrated into the McNary Dam complex on the Columbia River, enabling river traffic to bypass the dam.
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E.
Franklin Lock and Dam
Franklin Lock and Dam is a water control structure on Florida’s Caloosahatchee River that manages river flow, navigation, and flood control as part of the region’s water management system.
- 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: Marmet Lock and Dam Target entity description: Marmet Lock and Dam is a navigation and flood-control structure on the Kanawha River in West Virginia that helps maintain a stable waterway for commercial and recreational traffic.
-
A.
Murray Lock and Dam
Murray Lock and Dam is a navigation and flood-control structure on the Arkansas River near Little Rock, Arkansas, that helps regulate river flow and support commercial barge traffic.
-
B.
Winfield Lock and Dam
Winfield Lock and Dam is a navigation and flood-control structure on the Kanawha River in West Virginia that helps regulate river levels and facilitate barge traffic.
-
C.
Wheeler Lock and Dam
Wheeler Lock and Dam is a major navigation and hydroelectric structure on the Tennessee River in northern Alabama, forming Wheeler Lake and facilitating river traffic and power generation.
-
D.
McNary Lock and Dam
McNary Lock and Dam is a navigation lock facility integrated into the McNary Dam complex on the Columbia River, enabling river traffic to bypass the dam.
-
E.
Franklin Lock and Dam
Franklin Lock and Dam is a water control structure on Florida’s Caloosahatchee River that manages river flow, navigation, and flood control as part of the region’s water management system.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
flood-control structure
ⓘ
lock and dam ⓘ navigation structure ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| hasComponent |
dam
ⓘ
navigation lock ⓘ |
| hasFunction |
flood control
ⓘ
navigation ⓘ water level regulation ⓘ |
| isPartOf | Ohio River basin infrastructure NERFINISHED ⓘ |
| locatedIn |
Kanawha County, West Virginia
NERFINISHED
ⓘ
West Virginia NERFINISHED ⓘ |
| locatedInCountry |
United States of America
ⓘ
surface form:
United States
|
| locatedOnRiver | Kanawha River NERFINISHED ⓘ |
| maintains | stable waterway ⓘ |
| nearCity | Marmet, West Virginia NERFINISHED ⓘ |
| operatedBy |
U.S. Army Corps of Engineers
NERFINISHED
ⓘ
U.S. Army Corps of Engineers Huntington District NERFINISHED ⓘ |
| partOf | Kanawha River navigation system NERFINISHED ⓘ |
| purpose |
improve navigation on the Kanawha River
ⓘ
regulate river water levels ⓘ support barge traffic ⓘ |
| replaced | original Marmet Locks ⓘ |
| riverMileOnKanawha | approximately 67 ⓘ |
| supportsTraffic |
commercial barge traffic
ⓘ
recreational boats ⓘ |
| usedFor |
commercial navigation
ⓘ
flood control ⓘ recreational navigation ⓘ |
| waterwayClass | inland waterway ⓘ |
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: Marmet Lock and Dam Description of subject: Marmet Lock and Dam is a navigation and flood-control structure on the Kanawha River in West Virginia that helps maintain a stable waterway for commercial and recreational traffic.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.