Demopolis Lock and Dam
E848431
Demopolis Lock and Dam is a navigation and flood-control structure on the Tombigbee River in Alabama that helps regulate water levels and support commercial barge traffic.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Demopolis Lock and Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10151564 — 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: Demopolis Lock and Dam Context triple: [Tombigbee River, hasLockAndDam, Demopolis Lock and Dam]
-
A.
Tom Bevill Lock and Dam
Tom Bevill Lock and Dam is a navigation and flood-control structure on the Tombigbee River in Alabama, forming part of the Tennessee-Tombigbee Waterway system.
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B.
John C. Stennis Lock and Dam
John C. Stennis Lock and Dam is a navigation and flood-control structure on the Tombigbee River in Mississippi, named after U.S. Senator John C. Stennis.
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C.
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.
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D.
Dresden Island Lock and Dam
Dresden Island Lock and Dam is a navigation and flood-control structure on the Illinois Waterway that helps regulate river levels and facilitate barge traffic in northeastern Illinois.
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E.
Alton Lock and Dam
Alton Lock and Dam is a major navigation and flood-control structure on the Mississippi River that helps regulate river traffic and water levels as part of the Illinois Waterway 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: Demopolis Lock and Dam Target entity description: Demopolis Lock and Dam is a navigation and flood-control structure on the Tombigbee River in Alabama that helps regulate water levels and support commercial barge traffic.
-
A.
Tom Bevill Lock and Dam
Tom Bevill Lock and Dam is a navigation and flood-control structure on the Tombigbee River in Alabama, forming part of the Tennessee-Tombigbee Waterway system.
-
B.
John C. Stennis Lock and Dam
John C. Stennis Lock and Dam is a navigation and flood-control structure on the Tombigbee River in Mississippi, named after U.S. Senator John C. Stennis.
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C.
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.
-
D.
Dresden Island Lock and Dam
Dresden Island Lock and Dam is a navigation and flood-control structure on the Illinois Waterway that helps regulate river levels and facilitate barge traffic in northeastern Illinois.
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E.
Alton Lock and Dam
Alton Lock and Dam is a major navigation and flood-control structure on the Mississippi River that helps regulate river traffic and water levels as part of the Illinois Waterway system.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
flood-control structure
ⓘ
lock and dam ⓘ navigation structure ⓘ |
| affects |
river navigation conditions on the Tombigbee River
ⓘ
water levels upstream and downstream on the Tombigbee River ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| hasComponent |
concrete dam
ⓘ
navigation lock ⓘ spillway ⓘ |
| locatedIn | Alabama ⓘ |
| locatedNear | Demopolis, Alabama NERFINISHED ⓘ |
| locatedOnWaterway | Tombigbee River NERFINISHED ⓘ |
| operator | United States Army Corps of Engineers NERFINISHED ⓘ |
| partOf | Tennessee-Tombigbee Waterway NERFINISHED ⓘ |
| purpose |
flood control
ⓘ
navigation ⓘ water level regulation ⓘ |
| region | west-central Alabama ⓘ |
| riverMile | approximately 213 on the Tombigbee River ⓘ |
| supports |
commercial barge traffic
ⓘ
commercial navigation on the Tombigbee River ⓘ |
| usedFor |
inland waterway transportation
ⓘ
reducing downstream flood risk ⓘ regulating upstream pool levels ⓘ |
| waterwaySystem | Inland Waterway System of the United States 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: Demopolis Lock and Dam Description of subject: Demopolis Lock and Dam is a navigation and flood-control structure on the Tombigbee River in Alabama that helps regulate water levels and support commercial barge traffic.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.