Union Reservoir
E320927
Union Reservoir is a popular recreational lake near Longmont, Colorado, known for activities such as boating, fishing, swimming, and picnicking.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Union Reservoir canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2974728 — 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: Union Reservoir Context triple: [Longmont, hasRecreationFacility, Union Reservoir]
-
A.
Lusk Reservoir
Lusk Reservoir is a scenic man-made lake on the grounds of the United States Military Academy at West Point, often noted for its picturesque setting near the campus athletic facilities.
-
B.
Errwood Reservoir
Errwood Reservoir is a scenic man-made lake in the Goyt Valley in Derbyshire, England, popular for walking, fishing, and outdoor recreation.
-
C.
John Martin Reservoir
John Martin Reservoir is a large man-made lake and state park in southeastern Colorado known for its water recreation, birdwatching, and role in regional water storage and flood control.
-
D.
Hoover Reservoir
Hoover Reservoir is a large man-made lake in central Ohio that serves as a primary drinking water source and popular recreation area for the Columbus region.
-
E.
Greenfield Reservoir
Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
- 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: Union Reservoir Target entity description: Union Reservoir is a popular recreational lake near Longmont, Colorado, known for activities such as boating, fishing, swimming, and picnicking.
-
A.
Lusk Reservoir
Lusk Reservoir is a scenic man-made lake on the grounds of the United States Military Academy at West Point, often noted for its picturesque setting near the campus athletic facilities.
-
B.
Errwood Reservoir
Errwood Reservoir is a scenic man-made lake in the Goyt Valley in Derbyshire, England, popular for walking, fishing, and outdoor recreation.
-
C.
John Martin Reservoir
John Martin Reservoir is a large man-made lake and state park in southeastern Colorado known for its water recreation, birdwatching, and role in regional water storage and flood control.
-
D.
Hoover Reservoir
Hoover Reservoir is a large man-made lake in central Ohio that serves as a primary drinking water source and popular recreation area for the Columbus region.
-
E.
Greenfield Reservoir
Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
recreational lake
ⓘ
reservoir ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| hasAmenity |
boat ramp
ⓘ
dog park ⓘ fishing piers ⓘ parking lot ⓘ picnic areas ⓘ playground ⓘ restrooms ⓘ shelters ⓘ swim beach ⓘ trails ⓘ |
| hasRegulation |
day-use fee
ⓘ
no-wake boating rules ⓘ seasonal operating hours ⓘ |
| hasUse |
boating
ⓘ
day-use recreation ⓘ dog swimming area ⓘ fishing ⓘ kayaking ⓘ non-motorized boating ⓘ paddleboarding ⓘ picnicking ⓘ sailing ⓘ swimming ⓘ wildlife viewing ⓘ windsurfing ⓘ |
| hasWildlife |
shorebirds
ⓘ
warmwater fish species ⓘ waterfowl ⓘ |
| locatedIn |
Boulder County, Colorado
NERFINISHED
ⓘ
Colorado ⓘ Front Range Urban Corridor ⓘ Longmont, Colorado, United States ⓘ
surface form:
Longmont, Colorado
|
| locatedNear |
Longmont
ⓘ
surface form:
City of Longmont
|
| managingOrganization |
Longmont
ⓘ
surface form:
City of Longmont
|
| nearbyCity |
Longmont, Colorado, United States
ⓘ
surface form:
Longmont, Colorado
|
| partOf |
St. Vrain Creek
ⓘ
surface form:
St. Vrain Creek watershed
|
| primaryInflow |
St. Vrain Creek
ⓘ
surface form:
St. Vrain Supply Canal
|
| region | Northern Colorado ⓘ |
| usedFor |
irrigation water storage
ⓘ
municipal water supply support ⓘ recreation ⓘ |
| waterBodyType |
man-made lake
ⓘ
off-stream storage reservoir ⓘ |
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: Union Reservoir Description of subject: Union Reservoir is a popular recreational lake near Longmont, Colorado, known for activities such as boating, fishing, swimming, and picnicking.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.