Cooper, Iowa
E1003251
Cooper, Iowa is a small unincorporated community in Greene County known as a local access point along the Raccoon River Valley Trail.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cooper, Iowa canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T12763476 — 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: Cooper, Iowa Context triple: [Raccoon River Valley Trail, trailheadIn, Cooper, Iowa]
-
A.
Central City, Iowa
Central City, Iowa is a small town in eastern Iowa situated along the Wapsipinicon River, known for its rural community character and annual local festivals.
-
B.
McClelland, Iowa
McClelland, Iowa is a small rural community located in Pottawattamie County in the western part of the state.
-
C.
Sutherland, Iowa
Sutherland, Iowa is a small rural city in O'Brien County in northwestern Iowa.
-
D.
Lawton, Iowa
Lawton, Iowa is a small city in northwestern Iowa that functions largely as a residential community near the larger urban center of Sioux City.
-
E.
Wheatland, Iowa
Wheatland, Iowa is a small rural city in eastern Iowa known for its agricultural community and location within Clinton County.
- 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: Cooper, Iowa Target entity description: Cooper, Iowa is a small unincorporated community in Greene County known as a local access point along the Raccoon River Valley Trail.
-
A.
Central City, Iowa
Central City, Iowa is a small town in eastern Iowa situated along the Wapsipinicon River, known for its rural community character and annual local festivals.
-
B.
McClelland, Iowa
McClelland, Iowa is a small rural community located in Pottawattamie County in the western part of the state.
-
C.
Sutherland, Iowa
Sutherland, Iowa is a small rural city in O'Brien County in northwestern Iowa.
-
D.
Lawton, Iowa
Lawton, Iowa is a small city in northwestern Iowa that functions largely as a residential community near the larger urban center of Sioux City.
-
E.
Wheatland, Iowa
Wheatland, Iowa is a small rural city in eastern Iowa known for its agricultural community and location within Clinton County.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf | unincorporated community ⓘ |
| areaCode | 515 ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| county | Greene County, Iowa NERFINISHED ⓘ |
| developedAs | railroad town ⓘ |
| elevation |
approximately 1080 feet
ⓘ
approximately 329 meters ⓘ |
| featureType | rural community ⓘ |
| GNISFeatureID | 455632 ⓘ |
| hasNearbyCity | Jefferson, Iowa ⓘ |
| hasRecreation |
bicycling on Raccoon River Valley Trail
ⓘ
running on Raccoon River Valley Trail ⓘ walking on Raccoon River Valley Trail ⓘ |
| hasTrailAccess | Raccoon River Valley Trail ⓘ |
| hasTransportationHistory | Chicago, Rock Island and Pacific Railroad ⓘ |
| knownFor | access point to the Raccoon River Valley Trail ⓘ |
| locatedIn |
Greene County, Iowa
NERFINISHED
ⓘ
Iowa ⓘ Midwestern United States ⓘ United States ⓘ
linked to:
United States of America
|
| namedAfter | local railroad official ⓘ |
| partOf | Franklin Township, Greene County, Iowa ⓘ |
| populationTrend | small rural population ⓘ |
| postOfficeStatus | post office closed ⓘ |
| region |
west-central Iowa
ⓘ
linked to:
western Iowa
|
| state | Iowa ⓘ |
| timeZone | Central Time Zone ⓘ |
| timeZoneDST |
Central Daylight Time
ⓘ
linked to:
Central Time Zone
|
| trailSystemPartOf |
Raccoon River Valley Trail system
ⓘ
linked to:
Raccoon River Valley Trail
|
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: Cooper, Iowa Description of subject: Cooper, Iowa is a small unincorporated community in Greene County known as a local access point along the Raccoon River Valley Trail.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.