Rock River
E143813
Rock River is a tributary of the Big Sioux River flowing through parts of Iowa and South Dakota in the United States.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Rock River canonical | 10 |
How this entity was disambiguated
This entity first appeared as the object of triple T623933 — 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: Rock River Context triple: [Rock Valley, Iowa, locatedOn, Rock River]
-
A.
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.
-
B.
Illinois River
The Illinois River is a principal waterway in the U.S. state of Illinois that serves as a key tributary of the Mississippi River and an important route for transportation, commerce, and recreation.
-
C.
Sauk
The Sauk are a Native American people originally from the Great Lakes region, known for their resistance to U.S. expansion and their prominent leader Black Hawk.
-
D.
Son River
The Son River is a major river in central and eastern India that flows through states like Madhya Pradesh, Uttar Pradesh, and Bihar before joining the Ganges.
-
E.
Pound River
The Pound River is a tributary stream in New York State that feeds into the Croton River within the Croton River watershed.
- 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: Rock River Target entity description: Rock River is a tributary of the Big Sioux River flowing through parts of Iowa and South Dakota in the United States.
-
A.
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.
-
B.
Illinois River
The Illinois River is a principal waterway in the U.S. state of Illinois that serves as a key tributary of the Mississippi River and an important route for transportation, commerce, and recreation.
-
C.
Sauk
The Sauk are a Native American people originally from the Great Lakes region, known for their resistance to U.S. expansion and their prominent leader Black Hawk.
-
D.
Son River
The Son River is a major river in central and eastern India that flows through states like Madhya Pradesh, Uttar Pradesh, and Bihar before joining the Ganges.
-
E.
Pound River
The Pound River is a tributary stream in New York State that feeds into the Croton River within the Croton River watershed.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crossesPoliticalBoundary |
Iowa–Minnesota border
ⓘ
Iowa–South Dakota border ⓘ |
| drains |
agricultural land in Iowa
ⓘ
parts of southeastern South Dakota ⓘ parts of southwestern Minnesota ⓘ |
| flowsThrough |
Lincoln County, South Dakota
ⓘ
Lyon County, Iowa ⓘ Rock County, Minnesota ⓘ Sioux County, Iowa ⓘ |
| hasEcosystemType | prairie river ⓘ |
| hasMouth | confluence with Big Sioux River ⓘ |
| hasNameOrigin | named for rocky riverbed and banks ⓘ |
| hasTributary | Little Rock River ⓘ |
| hasWatershedArea | northwestern Iowa region ⓘ |
| isPartOf | Great Plains river systems ⓘ |
| isSubjectOf | U.S. Geological Survey hydrologic studies ⓘ |
| locatedIn |
Iowa
ⓘ
South Dakota ⓘ |
| mouthLocatedIn | South Dakota ⓘ |
| partOf |
Mississippi River basin
ⓘ
Missouri River watershed ⓘ
linked to:
Missouri River Basin
|
| region | Midwestern United States ⓘ |
| sourceLocatedIn | Minnesota ⓘ |
| tributaryOf | Big Sioux River ⓘ |
| usedFor |
canoeing
ⓘ
fishing ⓘ recreation ⓘ |
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: Rock River Description of subject: Rock River is a tributary of the Big Sioux River flowing through parts of Iowa and South Dakota in the United States.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.