Raccoon River
E188148
The Raccoon River is a central Iowa waterway that flows through the Des Moines area and serves as a major source of the city's drinking water and recreation.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Raccoon River canonical | 6 |
| South Raccoon River | 3 |
| Middle Raccoon River | 2 |
| North Raccoon River | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1176704 — 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: Raccoon River Context triple: [Des Moines, Iowa, locatedOnRiver, Raccoon River]
-
A.
Des Moines River
The Des Moines River is a major tributary of the Mississippi River that flows through Iowa and Minnesota, playing a central role in the geography and history of Des Moines and the surrounding region.
-
B.
Iowa River
The Iowa River is a major waterway in the U.S. state of Iowa that flows generally southeastward and ultimately joins the Mississippi River.
-
C.
Cedar River
The Cedar River is a river in Washington State that flows from the Cascade Range through rural and suburban areas before ultimately feeding into Lake Washington near Seattle.
-
D.
Cedar River
Cedar River is a major river in Iowa and Minnesota known for flowing through cities like Cedar Rapids and contributing significantly to the region’s ecology and economy.
-
E.
Rock River
Rock River is a tributary of the Big Sioux River flowing through parts of Iowa and South Dakota in the United States.
- 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: Raccoon River Target entity description: The Raccoon River is a central Iowa waterway that flows through the Des Moines area and serves as a major source of the city's drinking water and recreation.
-
A.
Des Moines River
The Des Moines River is a major tributary of the Mississippi River that flows through Iowa and Minnesota, playing a central role in the geography and history of Des Moines and the surrounding region.
-
B.
Iowa River
The Iowa River is a major waterway in the U.S. state of Iowa that flows generally southeastward and ultimately joins the Mississippi River.
-
C.
Cedar River
The Cedar River is a river in Washington State that flows from the Cascade Range through rural and suburban areas before ultimately feeding into Lake Washington near Seattle.
-
D.
Cedar River
Cedar River is a major river in Iowa and Minnesota known for flowing through cities like Cedar Rapids and contributing significantly to the region’s ecology and economy.
-
E.
Rock River
Rock River is a tributary of the Big Sioux River flowing through parts of Iowa and South Dakota in the United States.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
river
ⓘ
waterway ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| crossedBy | multiple road bridges in Des Moines ⓘ |
| drainageBasin | agricultural lands of central Iowa ⓘ |
| flowsNear |
Valley Junction area
ⓘ
West Des Moines, Iowa ⓘ
surface form:
West Des Moines
|
| flowsThrough |
Dallas County, Iowa
NERFINISHED
ⓘ
Des Moines, Iowa ⓘ
surface form:
Des Moines
Polk County, Iowa NERFINISHED ⓘ |
| hasEnvironmentalConcern |
agricultural runoff
ⓘ
high nitrate levels ⓘ nutrient pollution ⓘ |
| hasRecreationArea | Raccoon River Park ⓘ |
| hasTributary |
Raccoon River
self-linksurface differs
ⓘ
surface form:
Middle Raccoon River
Raccoon River self-linksurface differs ⓘ
surface form:
North Raccoon River
Raccoon River self-linksurface differs ⓘ
surface form:
South Raccoon River
|
| hasUse |
source of industrial process water
ⓘ
urban recreation corridor ⓘ |
| locatedIn |
Iowa
ⓘ
central Iowa ⓘ |
| mouthOf | Des Moines River ⓘ |
| near | downtown Des Moines ⓘ |
| partOf |
Des Moines metropolitan area hydrology
ⓘ
Mississippi River basin ⓘ
surface form:
Mississippi River watershed
|
| region | Midwestern United States ⓘ |
| sourceOf | drinking water for Des Moines ⓘ |
| subjectOf |
flood control efforts
ⓘ
water quality monitoring ⓘ |
| tributaryOf | Des Moines River ⓘ |
| usedFor |
boating
ⓘ
canoeing ⓘ fishing ⓘ kayaking ⓘ municipal water supply ⓘ recreation ⓘ wildlife habitat ⓘ |
| waterSourceFor | Des Moines Water Works ⓘ |
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: Raccoon River Description of subject: The Raccoon River is a central Iowa waterway that flows through the Des Moines area and serves as a major source of the city's drinking water and recreation.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
North Raccoon River
this entity surface form:
South Raccoon River
this entity surface form:
North Raccoon River
this entity surface form:
Middle Raccoon River
this entity surface form:
South Raccoon River
this entity surface form:
Middle Raccoon River
this entity surface form:
South Raccoon River
subject surface form:
Central Iowa