Jamestown Reservoir
E863581
Jamestown Reservoir is a man-made lake in North Dakota used for flood control, recreation, and water supply along the James River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Jamestown Reservoir canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T10305964 — 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: Jamestown Reservoir Context triple: [James River, hasReservoir, Jamestown Reservoir]
-
A.
Lexington Reservoir
Lexington Reservoir is a man-made lake and popular recreation area in Santa Clara County, California, used for water supply, fishing, and outdoor activities.
-
B.
Buckley Dunton Reservoir
Buckley Dunton Reservoir is a scenic man-made lake in Becket, Massachusetts, popular for fishing, paddling, and wildlife viewing within the Berkshires.
-
C.
Lafayette Reservoir
Lafayette Reservoir is a popular man-made lake and recreation area in Lafayette, California, known for its hiking trails, fishing, boating, and scenic picnic spots.
-
D.
R. L. Harris Reservoir
R. L. Harris Reservoir is a man-made lake in east-central Alabama popular for fishing, boating, and other recreational activities.
-
E.
Rollins Reservoir
Rollins Reservoir is an artificial lake in the Sierra Nevada foothills of California, created by damming the Bear River for water storage, hydroelectric power, and recreation.
- 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: Jamestown Reservoir Target entity description: Jamestown Reservoir is a man-made lake in North Dakota used for flood control, recreation, and water supply along the James River.
-
A.
Lexington Reservoir
Lexington Reservoir is a man-made lake and popular recreation area in Santa Clara County, California, used for water supply, fishing, and outdoor activities.
-
B.
Buckley Dunton Reservoir
Buckley Dunton Reservoir is a scenic man-made lake in Becket, Massachusetts, popular for fishing, paddling, and wildlife viewing within the Berkshires.
-
C.
Lafayette Reservoir
Lafayette Reservoir is a popular man-made lake and recreation area in Lafayette, California, known for its hiking trails, fishing, boating, and scenic picnic spots.
-
D.
R. L. Harris Reservoir
R. L. Harris Reservoir is a man-made lake in east-central Alabama popular for fishing, boating, and other recreational activities.
-
E.
Rollins Reservoir
Rollins Reservoir is an artificial lake in the Sierra Nevada foothills of California, created by damming the Bear River for water storage, hydroelectric power, and recreation.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| country |
United States
ⓘ
linked to:
United States of America
|
| damType | earth-fill dam ⓘ |
| formedBy | Jamestown Dam ⓘ |
| hasActivity |
birdwatching
ⓘ
canoeing ⓘ ice fishing ⓘ kayaking ⓘ water skiing ⓘ |
| hasFacility |
boat ramps
ⓘ
campgrounds ⓘ picnic areas ⓘ swimming beaches ⓘ |
| hasFishSpecies |
bluegill
ⓘ
channel catfish ⓘ crappie ⓘ northern pike ⓘ smallmouth bass ⓘ walleye ⓘ yellow perch ⓘ |
| hasFunction | flow regulation of the James River ⓘ |
| hasUse |
boating
ⓘ
camping ⓘ fishing ⓘ irrigation support ⓘ swimming ⓘ wildlife viewing ⓘ |
| isAssociatedWith | Jamestown Dam ⓘ |
| isUpstreamOf | Pipestem Reservoir ⓘ |
| locatedIn |
North Dakota
ⓘ
Stutsman County, North Dakota ⓘ |
| locatedOnRiver | James River ⓘ |
| managingAgency |
United States Bureau of Reclamation
ⓘ
linked to:
Bureau of Reclamation
|
| nearestCity | Jamestown, North Dakota ⓘ |
| operator |
United States Bureau of Reclamation
ⓘ
linked to:
Bureau of Reclamation
|
| partOf |
James River basin
ⓘ
linked to:
James River
|
| primaryUse |
flood control
ⓘ
municipal water supply ⓘ recreation ⓘ |
| purpose |
flood control on the James River
ⓘ
recreational development ⓘ water supply for nearby communities ⓘ |
| region | central North Dakota ⓘ |
| state | North Dakota ⓘ |
| waterBodyType | freshwater lake ⓘ |
| watercourse | James River ⓘ |
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: Jamestown Reservoir Description of subject: Jamestown Reservoir is a man-made lake in North Dakota used for flood control, recreation, and water supply along the James River.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.