Metrorail Blue Line
E765188
The Metrorail Blue Line is a Washington, D.C. Metro rapid transit line that runs through the capital region, connecting key suburbs and urban centers across Virginia and the District of Columbia.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Metrorail Blue Line canonical | 4 |
| Metrorail Green Line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8858188 — 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: Metrorail Blue Line Context triple: [Arlington County, transportServedBy, Metrorail Blue Line]
-
A.
METRORail Red Line
The METRORail Red Line is a light rail line in Houston, Texas, running through key central areas including downtown and the Museum District.
-
B.
METRO Blue Line
The METRO Blue Line is a major light rail transit route in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with the Mall of America and Minneapolis–Saint Paul International Airport.
-
C.
METRORail Purple Line
The METRORail Purple Line is a light rail line in Houston, Texas, serving southeastern neighborhoods and key destinations as part of the city’s METRORail transit system.
-
D.
METRORail Green Line
The METRORail Green Line is a light rail service in Houston, Texas, forming part of the city’s METRORail system and serving neighborhoods east of downtown.
-
E.
METRO Green Line
METRO Green Line is a light rail transit route in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with downtown St. Paul and key destinations in between.
- 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: Metrorail Blue Line Target entity description: The Metrorail Blue Line is a Washington, D.C. Metro rapid transit line that runs through the capital region, connecting key suburbs and urban centers across Virginia and the District of Columbia.
-
A.
METRORail Red Line
The METRORail Red Line is a light rail line in Houston, Texas, running through key central areas including downtown and the Museum District.
-
B.
METRO Blue Line
The METRO Blue Line is a major light rail transit route in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with the Mall of America and Minneapolis–Saint Paul International Airport.
-
C.
METRORail Purple Line
The METRORail Purple Line is a light rail line in Houston, Texas, serving southeastern neighborhoods and key destinations as part of the city’s METRORail transit system.
-
D.
METRORail Green Line
The METRORail Green Line is a light rail service in Houston, Texas, forming part of the city’s METRORail system and serving neighborhoods east of downtown.
-
E.
METRO Green Line
METRO Green Line is a light rail transit route in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with downtown St. Paul and key destinations in between.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| abbreviation | Blue Line NERFINISHED ⓘ |
| color | blue ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | 750 V DC third rail ⓘ |
| fareMedium | SmarTrip card ⓘ |
| fareSystem | distance-based fare ⓘ |
| locale | Washington, D.C. metropolitan area NERFINISHED ⓘ |
| numberOfTracks | 2 ⓘ |
| openingDate | 1977 ⓘ |
| operator | Washington Metropolitan Area Transit Authority ⓘ |
| partOfNetwork | Metrorail NERFINISHED ⓘ |
| servesCity | Washington, D.C. NERFINISHED ⓘ |
| servesState |
Maryland
NERFINISHED
ⓘ
Virginia NERFINISHED ⓘ |
| servesStation |
Addison Road–Seat Pleasant station
NERFINISHED
ⓘ
Arlington Cemetery station NERFINISHED ⓘ Benning Road station NERFINISHED ⓘ Braddock Road station NERFINISHED ⓘ Capitol Heights station NERFINISHED ⓘ Capitol South station NERFINISHED ⓘ Downtown Largo station NERFINISHED ⓘ Eastern Market station NERFINISHED ⓘ Farragut West station NERFINISHED ⓘ Federal Center SW station NERFINISHED ⓘ Federal Triangle station NERFINISHED ⓘ Foggy Bottom–GWU station NERFINISHED ⓘ Franconia–Springfield station NERFINISHED ⓘ King Street–Old Town station NERFINISHED ⓘ L’Enfant Plaza station NERFINISHED ⓘ McPherson Square station NERFINISHED ⓘ Metro Center station NERFINISHED ⓘ Morgan Boulevard station NERFINISHED ⓘ National Airport station NERFINISHED ⓘ Pentagon City station NERFINISHED ⓘ Pentagon station NERFINISHED ⓘ Potomac Avenue station NERFINISHED ⓘ Rosslyn station NERFINISHED ⓘ Smithsonian station NERFINISHED ⓘ Stadium–Armory station NERFINISHED ⓘ Van Dorn Street station NERFINISHED ⓘ |
| sharesTracksWith |
Metrorail Orange Line
NERFINISHED
ⓘ
Metrorail Silver Line NERFINISHED ⓘ Metrorail Yellow Line NERFINISHED ⓘ |
| symbol | Blue ⓘ |
| system | Washington Metro NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | heavy rail ⓘ |
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: Metrorail Blue Line Description of subject: The Metrorail Blue Line is a Washington, D.C. Metro rapid transit line that runs through the capital region, connecting key suburbs and urban centers across Virginia and the District of Columbia.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Metrorail Green Line
subject surface form:
Metroway