Illinois Route 251
E720007
Illinois Route 251 is a north–south state highway in northern Illinois that generally follows the former alignment of U.S. Route 51, serving communities parallel to Interstate 39.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Illinois Route 251 canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T7786670 — 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 Route 251 Context triple: [Illinois Route 64, hasMajorJunctionWith, Illinois Route 251]
-
A.
Illinois Route 23
Illinois Route 23 is a north–south state highway in northern Illinois that connects several communities, including the city of DeKalb, and serves as a key regional transportation corridor.
-
B.
Illinois Route 120
Illinois Route 120 is an east–west state highway in northeastern Illinois that serves as a major arterial route connecting communities such as Waukegan and McHenry.
-
C.
Illinois Route 21
Illinois Route 21 is a state highway in northeastern Illinois that runs through several suburbs north of Chicago, including Lincolnshire.
-
D.
Illinois Route 159
Illinois Route 159 is a north–south state highway in southwestern Illinois that serves communities such as Belleville and connects them to the broader regional road network.
-
E.
Illinois Route 171
Illinois Route 171 is a state highway in northeastern Illinois that runs through the southwestern suburbs of Chicago, serving communities such as Lockport and connecting several major regional routes.
- 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 Route 251 Target entity description: Illinois Route 251 is a north–south state highway in northern Illinois that generally follows the former alignment of U.S. Route 51, serving communities parallel to Interstate 39.
-
A.
Illinois Route 23
Illinois Route 23 is a north–south state highway in northern Illinois that connects several communities, including the city of DeKalb, and serves as a key regional transportation corridor.
-
B.
Illinois Route 120
Illinois Route 120 is an east–west state highway in northeastern Illinois that serves as a major arterial route connecting communities such as Waukegan and McHenry.
-
C.
Illinois Route 21
Illinois Route 21 is a state highway in northeastern Illinois that runs through several suburbs north of Chicago, including Lincolnshire.
-
D.
Illinois Route 159
Illinois Route 159 is a north–south state highway in southwestern Illinois that serves communities such as Belleville and connects them to the broader regional road network.
-
E.
Illinois Route 171
Illinois Route 171 is a state highway in northeastern Illinois that runs through the southwestern suburbs of Chicago, serving communities such as Lockport and connecting several major regional routes.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf | state highway ⓘ |
| abbreviation |
IL 251
NERFINISHED
ⓘ
IL-251 NERFINISHED ⓘ Illinois 251 NERFINISHED ⓘ |
| category |
State highways in Illinois
ⓘ
Transportation in northern Illinois ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| followsFormerAlignmentOf | U.S. Route 51 NERFINISHED ⓘ |
| hasDirection |
northbound
ⓘ
southbound ⓘ |
| highwayNumber | 251 ⓘ |
| highwayType | Illinois state route ⓘ |
| locatedIn | northern Illinois NERFINISHED ⓘ |
| maintainedBy | Illinois Department of Transportation NERFINISHED ⓘ |
| orientation | north–south ⓘ |
| parallelTo | U.S. Route 51 (modern alignment in the region) NERFINISHED ⓘ |
| partOf | Illinois State Highway System NERFINISHED ⓘ |
| roadSurface | paved ⓘ |
| routeFunction |
local access route
ⓘ
regional connector ⓘ |
| runsParallelTo | Interstate 39 NERFINISHED ⓘ |
| serves |
Rockford, Illinois metropolitan area
NERFINISHED
ⓘ
communities along the Interstate 39 corridor in northern Illinois ⓘ |
| state | Illinois ⓘ |
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 Route 251 Description of subject: Illinois Route 251 is a north–south state highway in northern Illinois that generally follows the former alignment of U.S. Route 51, serving communities parallel to Interstate 39.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.