Chicago Union Station – Aurora route
E657837
The Chicago Union Station – Aurora route is a Metra BNSF Railway commuter rail line in the Chicago metropolitan area that connects downtown Chicago’s Union Station with the western suburb of Aurora.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Chicago Union Station – Aurora route canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7335804 — 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: Chicago Union Station – Aurora route Context triple: [Downers Grove Main Street station, servesLine, Chicago Union Station – Aurora route]
-
A.
Metra Rock Island District line
The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
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B.
Elburn station
Elburn station is a commuter rail station in Elburn, Illinois, serving as the western endpoint of Metra’s Union Pacific West Line to Chicago.
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C.
IND 63rd Street Line
The IND 63rd Street Line is a New York City Subway line in Manhattan and Queens that carries F and sometimes other services through the 63rd Street Tunnel.
-
D.
Addison (Brown Line)
Addison is an elevated Chicago 'L' station on the CTA's Brown Line serving the North Center/Lincoln Square area.
-
E.
University City Boulevard station
University City Boulevard station is a light rail stop on Charlotte's LYNX Blue Line serving the University City area near the University of North Carolina at Charlotte.
- 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: Chicago Union Station – Aurora route Target entity description: The Chicago Union Station – Aurora route is a Metra BNSF Railway commuter rail line in the Chicago metropolitan area that connects downtown Chicago’s Union Station with the western suburb of Aurora.
-
A.
Metra Rock Island District line
The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
-
B.
Elburn station
Elburn station is a commuter rail station in Elburn, Illinois, serving as the western endpoint of Metra’s Union Pacific West Line to Chicago.
-
C.
IND 63rd Street Line
The IND 63rd Street Line is a New York City Subway line in Manhattan and Queens that carries F and sometimes other services through the 63rd Street Tunnel.
-
D.
Addison (Brown Line)
Addison is an elevated Chicago 'L' station on the CTA's Brown Line serving the North Center/Lincoln Square area.
-
E.
University City Boulevard station
University City Boulevard station is a light rail stop on Charlotte's LYNX Blue Line serving the University City area near the University of North Carolina at Charlotte.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf | commuter rail line ⓘ |
| connectsDowntownWith | western suburb of Aurora ⓘ |
| connectsWith |
Amtrak services at Chicago Union Station
ⓘ
CTA bus services at Chicago Union Station ⓘ Pace bus services at multiple stations ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | not electrified ⓘ |
| endPoint | Aurora Transportation Center NERFINISHED ⓘ |
| fareSystem | Metra zone-based fares ⓘ |
| hasIntermediateStopsIn |
Cook County, Illinois
NERFINISHED
ⓘ
DuPage County, Illinois NERFINISHED ⓘ Kane County, Illinois NERFINISHED ⓘ |
| hasServicePattern |
all-stop local trains
ⓘ
express trains skipping some intermediate stops ⓘ |
| lineNumber | BNSF Line NERFINISHED ⓘ |
| locatedIn | Chicago metropolitan area ⓘ |
| operatedBy | Metra BNSF Railway District NERFINISHED ⓘ |
| operator | Metra NERFINISHED ⓘ |
| ownerOfInfrastructure | BNSF Railway NERFINISHED ⓘ |
| ownerOfStations | Metra NERFINISHED ⓘ |
| partOf | Metra commuter rail system NERFINISHED ⓘ |
| peakDirection |
inbound to Chicago in morning peak
ⓘ
outbound to Aurora in evening peak ⓘ |
| primaryStation |
Aurora Transportation Center
NERFINISHED
ⓘ
Chicago Union Station NERFINISHED ⓘ |
| primaryUse | commuter travel between suburbs and downtown Chicago ⓘ |
| railroadSubdivision | BNSF Chicago Subdivision NERFINISHED ⓘ |
| safetySystem | Positive Train Control NERFINISHED ⓘ |
| servesCity |
Aurora, Illinois
NERFINISHED
ⓘ
Chicago, Illinois NERFINISHED ⓘ |
| servesRegion | western suburbs of Chicago ⓘ |
| serviceType | commuter rail ⓘ |
| startPoint | Chicago Union Station NERFINISHED ⓘ |
| state | Illinois ⓘ |
| terminus |
Aurora Transportation Center
NERFINISHED
ⓘ
Chicago Union Station NERFINISHED ⓘ |
| timeZone | Central Time Zone ⓘ |
| trackGauge | standard gauge ⓘ |
| usesInfrastructureOf | BNSF Railway NERFINISHED ⓘ |
| usesRollingStockType | diesel locomotive-hauled coaches ⓘ |
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: Chicago Union Station – Aurora route Description of subject: The Chicago Union Station – Aurora route is a Metra BNSF Railway commuter rail line in the Chicago metropolitan area that connects downtown Chicago’s Union Station with the western suburb of Aurora.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.