Illinois–Indiana state line
E147319
The Illinois–Indiana state line is the boundary separating the U.S. states of Illinois and Indiana, running north–south from Lake Michigan through both urban and rural areas.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Illinois–Indiana state line canonical | 4 |
| Illinois–Indiana border | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1293514 — 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: Illinois–Indiana state line Context triple: [Calumet City, Illinois, locatedNear, Illinois–Indiana state line]
-
A.
Missouri–Kansas state line
The Missouri–Kansas state line is the boundary separating the states of Missouri and Kansas, notably running through the Kansas City metropolitan area and dividing it between the two states.
-
B.
Nebraska–Iowa border
The Nebraska–Iowa border is the state line in the central United States that largely follows the course of the Missouri River, separating Nebraska to the west from Iowa to the east.
-
C.
Nebraska–Missouri border
The Nebraska–Missouri border is the state line in the central United States that largely follows the course of the Missouri River, separating Nebraska to the west from Missouri to the east.
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D.
Illinois Prairie Path
The Illinois Prairie Path is a pioneering multi-use rail-trail in northeastern Illinois, popular for walking, running, and cycling through suburban natural areas.
-
E.
Great Western Trail (Illinois)
Great Western Trail (Illinois) is a multi-use recreational rail trail in the Chicago metropolitan area, popular for biking, walking, and running through suburban and prairie landscapes.
- 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: Illinois–Indiana state line Target entity description: The Illinois–Indiana state line is the boundary separating the U.S. states of Illinois and Indiana, running north–south from Lake Michigan through both urban and rural areas.
-
A.
Missouri–Kansas state line
The Missouri–Kansas state line is the boundary separating the states of Missouri and Kansas, notably running through the Kansas City metropolitan area and dividing it between the two states.
-
B.
Nebraska–Iowa border
The Nebraska–Iowa border is the state line in the central United States that largely follows the course of the Missouri River, separating Nebraska to the west from Iowa to the east.
-
C.
Nebraska–Missouri border
The Nebraska–Missouri border is the state line in the central United States that largely follows the course of the Missouri River, separating Nebraska to the west from Missouri to the east.
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D.
Illinois Prairie Path
The Illinois Prairie Path is a pioneering multi-use rail-trail in northeastern Illinois, popular for walking, running, and cycling through suburban natural areas.
-
E.
Great Western Trail (Illinois)
Great Western Trail (Illinois) is a multi-use recreational rail trail in the Chicago metropolitan area, popular for biking, walking, and running through suburban and prairie landscapes.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
internationally recognized boundary
ⓘ
state border ⓘ |
| adjacentTo |
Cook County, Illinois
ⓘ
Jasper County, Indiana ⓘ Kankakee County, Illinois ⓘ Lake County, Indiana ⓘ Newton County, Indiana ⓘ Will County, Illinois ⓘ |
| bordersCity |
Calumet City, Illinois
ⓘ
City of Chicago ⓘ
surface form:
Chicago
Hammond, Indiana ⓘ Lansing, Illinois ⓘ Munster, Indiana ⓘ |
| bordersRegion |
Chicago metropolitan area
ⓘ
surface form:
Chicagoland
|
| country | United States of America ⓘ |
| crossedBy |
Interstate 80
ⓘ
Interstate 90 ⓘ Interstate 94 NERFINISHED ⓘ U.S. Route 30 ⓘ U.S. Route 41 NERFINISHED ⓘ railway lines ⓘ |
| definedBy | surveys of the early 19th century ⓘ |
| followsDirection | north–south ⓘ |
| formsPartOf |
boundary of Illinois
ⓘ
boundary of Indiana ⓘ |
| governedBy |
laws of Illinois
ⓘ
laws of Indiana ⓘ |
| hasAdjacentTimeZone |
Central Time Zone (Illinois side)
ⓘ
Eastern Time Zone (most of Indiana side) ⓘ |
| hasCoordinateSystemBasis | Public Land Survey System ⓘ |
| hasHistoricalIssue | survey and demarcation disputes in the 19th century ⓘ |
| hasPart |
lake boundary on Lake Michigan
ⓘ
land boundary ⓘ |
| isSubjectOf | interstate compacts and agreements ⓘ |
| legalStatus | interstate boundary ⓘ |
| locatedIn | Midwestern United States ⓘ |
| markedBy | boundary markers and monuments ⓘ |
| passesThrough |
rural areas
ⓘ
urban areas ⓘ |
| recognizedBy | federal law of the United States ⓘ |
| regulates | allocation of certain natural resources between Illinois and Indiana ⓘ |
| separates |
Illinois
ⓘ
Indiana ⓘ |
| startsAt | Lake Michigan ⓘ |
| touchesWaterBody | Lake Michigan ⓘ |
| usedFor |
electoral district delimitation
ⓘ
jurisdictional division ⓘ law enforcement jurisdiction ⓘ taxation jurisdiction ⓘ |
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: Illinois–Indiana state line Description of subject: The Illinois–Indiana state line is the boundary separating the U.S. states of Illinois and Indiana, running north–south from Lake Michigan through both urban and rural areas.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Illinois–Indiana border