Red Line (Chicago "L")
E252488
The Red Line is a major rapid transit route of the Chicago "L" system, running north–south through the city and operating 24 hours a day.
All labels observed (10)
How this entity was disambiguated
This entity first appeared as the object of triple T2254858 — 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: Red Line (Chicago "L") Context triple: [Northwestern Elevated Railroad, successorLine, Red Line (Chicago "L")]
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A.
Brown Line
The Brown Line is a rapid transit route of Chicago's "L" system that primarily serves the city's North Side and northwest neighborhoods.
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B.
Orange Line
The Orange Line is one of the primary rapid transit routes in the Washington Metro system, running east–west through Washington, D.C. and its Virginia and Maryland suburbs.
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C.
Orange Line
The Orange Line is a rapid transit route in Chicago that connects the city's Loop with Midway International Airport as part of the Chicago "L" system.
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D.
Orange Line
The Orange Line is a light rail route in the Dallas Area Rapid Transit (DART) system serving key destinations including Dallas/Fort Worth International Airport and several northern suburbs.
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E.
Orange Line
The Orange Line is a rapid transit route in the Boston metropolitan area that runs north–south through downtown as part of the MBTA subway system.
- 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: Red Line (Chicago "L") Target entity description: The Red Line is a major rapid transit route of the Chicago "L" system, running north–south through the city and operating 24 hours a day.
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A.
Brown Line
The Brown Line is a rapid transit route of Chicago's "L" system that primarily serves the city's North Side and northwest neighborhoods.
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B.
Orange Line
The Orange Line is one of the primary rapid transit routes in the Washington Metro system, running east–west through Washington, D.C. and its Virginia and Maryland suburbs.
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C.
Orange Line
The Orange Line is a rapid transit route in Chicago that connects the city's Loop with Midway International Airport as part of the Chicago "L" system.
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D.
Orange Line
The Orange Line is a rapid transit route in the Boston metropolitan area that runs north–south through downtown as part of the MBTA subway system.
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E.
Orange Line
The Orange Line is a major corridor of the Delhi Metro system that connects central Delhi to the Indira Gandhi International Airport and surrounding areas.
- F. None of above. chosen
Statements (62)
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: Red Line (Chicago "L") Description of subject: The Red Line is a major rapid transit route of the Chicago "L" system, running north–south through the city and operating 24 hours a day.
Referenced by (39)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Chicago Transit Authority Red Line
subject surface form:
Jackson station (CTA Red Line)
this entity surface form:
Red Line (CTA)
this entity surface form:
Chicago Transit Authority (CTA) Red Line
this entity surface form:
Red Line (CTA)
this entity surface form:
Chicago Transit Authority Red Line
this entity surface form:
Chicago Transit Authority Red Line
this entity surface form:
Chicago "L" Red Line
this entity surface form:
Red Line (Chicago Transit Authority)
this entity surface form:
Chicago Transit Authority Red Line
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Chicago Red Line north–south corridor
subject surface form:
Roosevelt station (CTA)
this entity surface form:
Red Line (CTA)
subject surface form:
Belmont station (CTA North Side)
this entity surface form:
Red Line (CTA)
this entity surface form:
Chicago Transit Authority Red Line
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Chicago (Red Line)
this entity surface form:
North Side Red Line branch
this entity surface form:
Red Line (CTA)
subject surface form:
Jackson (CTA Red Line station)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
CTA North Side Main Line corridor
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)
this entity surface form:
Red Line (CTA)