Blue Line (Washington Metro)
E22857
The Blue Line is one of the primary rapid transit lines of the Washington Metro system, running through downtown Washington, D.C., and connecting key locations in Virginia and Maryland.
All labels observed (10)
How this entity was disambiguated
This entity first appeared as the object of triple T68524 — 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: Blue Line (Washington Metro) Context triple: [Foggy Bottom–GWU station, servedByLine, Blue Line (Washington Metro)]
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A.
Silver Line
The Silver Line is a rapid transit route in the Washington Metro system that serves northern Virginia suburbs, including Tysons and Reston, and connects them to Washington, D.C.
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B.
Blue Line
The Blue Line is a major rapid transit route in Chicago that runs between O'Hare International Airport and the city's western suburbs via downtown.
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C.
Washington Metro
Washington Metro is the rapid transit system serving the Washington, D.C. metropolitan area, known for its extensive rail network connecting the city with its suburbs in Maryland and Virginia.
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D.
Purple Line
The Purple Line is a rapid transit route in Chicago's 'L' system that primarily serves the city's northern suburbs and connects them to the North Side of Chicago.
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E.
Red Line
The Red Line is a major rapid transit route in Chicago that runs north–south through the city, serving as one of the busiest lines in its subway and elevated rail 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: Blue Line (Washington Metro) Target entity description: The Blue Line is one of the primary rapid transit lines of the Washington Metro system, running through downtown Washington, D.C., and connecting key locations in Virginia and Maryland.
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A.
Silver Line
The Silver Line is a rapid transit route in the Washington Metro system that serves northern Virginia suburbs, including Tysons and Reston, and connects them to Washington, D.C.
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B.
Blue Line
The Blue Line is a major rapid transit route in Chicago that runs between O'Hare International Airport and the city's western suburbs via downtown.
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C.
Washington Metro
Washington Metro is the rapid transit system serving the Washington, D.C. metropolitan area, known for its extensive rail network connecting the city with its suburbs in Maryland and Virginia.
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D.
Purple Line
The Purple Line is a rapid transit route in Chicago's 'L' system that primarily serves the city's northern suburbs and connects them to the North Side of Chicago.
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E.
Red Line
The Red Line is a major rapid transit route in Chicago that runs north–south through the city, serving as one of the busiest lines in its subway and elevated rail system.
- F. None of above. chosen
Statements (57)
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: Blue Line (Washington Metro) Description of subject: The Blue Line is one of the primary rapid transit lines of the Washington Metro system, running through downtown Washington, D.C., and connecting key locations in Virginia and Maryland.
Referenced by (61)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Ronald Reagan Washington National Airport
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue Line
subject surface form:
Ronald Reagan Washington National Airport
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue Line
subject surface form:
Green Line (Washington Metro)
subject surface form:
Orange Line (Washington Metro)
subject surface form:
Silver Line (Washington Metro)
subject surface form:
Pentagon station
this entity surface form:
Washington Metro Blue Line stations
subject surface form:
Yellow Line (Washington Metro)
subject surface form:
Foggy Bottom
this entity surface form:
Washington Metro Blue Line
subject surface form:
Springfield, Virginia
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue Line
subject surface form:
Red Line (Washington Metro)
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Metrorail Blue/Yellow Line corridor
this entity surface form:
Metro Blue Line
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue/Orange/Silver corridor
this entity surface form:
Washington Metro Blue Line
this entity surface form:
Washington Metro Blue Line corridor
this entity surface form:
Washington Metro Blue Line (nearby)
this entity surface form:
Washington Metro Blue Line