Metrorail Orange Line
E766037
The Metrorail Orange Line is a Washington, D.C. Metro rapid transit line that runs east–west through the region, connecting downtown D.C. with Arlington, Fairfax County, and beyond.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Metrorail Orange Line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8858189 — 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 Orange Line Context triple: [Arlington County, transportServedBy, Metrorail Orange Line]
-
A.
Metrorail Blue Line
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.
-
B.
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.
-
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 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.
- 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 Orange Line Target entity description: The Metrorail Orange Line is a Washington, D.C. Metro rapid transit line that runs east–west through the region, connecting downtown D.C. with Arlington, Fairfax County, and beyond.
-
A.
Metrorail Blue Line
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.
-
B.
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.
-
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 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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| character | underground and surface ⓘ |
| colorOnMap | orange ⓘ |
| connectsDowntown | Washington, D.C. NERFINISHED ⓘ |
| connectsWithLine |
Blue Line
NERFINISHED
ⓘ
Green Line NERFINISHED ⓘ Red Line NERFINISHED ⓘ Silver Line NERFINISHED ⓘ Yellow Line NERFINISHED ⓘ |
| direction | east–west ⓘ |
| electrification | 750 V DC third rail ⓘ |
| fareCollection | proof-of-payment with faregates ⓘ |
| hasServiceType |
all-day service
ⓘ
peak-period service ⓘ |
| hasTerminus |
New Carrollton station
NERFINISHED
ⓘ
Vienna station NERFINISHED ⓘ |
| locale | Washington, D.C. metropolitan area NERFINISHED ⓘ |
| openingDate | 1977 ⓘ |
| operator | Washington Metropolitan Area Transit Authority ⓘ |
| ownedBy | Washington Metropolitan Area Transit Authority ⓘ |
| partOfNetwork | Metrorail NERFINISHED ⓘ |
| primaryOrientation | suburban–downtown commuter corridor ⓘ |
| region |
Mid-Atlantic states
ⓘ
surface form:
Mid-Atlantic United States
|
| servesCity | Washington, D.C. NERFINISHED ⓘ |
| servesCounty |
Arlington County, Virginia
NERFINISHED
ⓘ
Fairfax County, Virginia NERFINISHED ⓘ |
| servesState |
Maryland
NERFINISHED
ⓘ
Virginia NERFINISHED ⓘ |
| servesStation |
Ballston–MU station
NERFINISHED
ⓘ
Cheverly station NERFINISHED ⓘ Clarendon station NERFINISHED ⓘ Court House station NERFINISHED ⓘ Deanwood station NERFINISHED ⓘ Eastern Market station NERFINISHED ⓘ Foggy Bottom–GWU station NERFINISHED ⓘ Landover station NERFINISHED ⓘ L’Enfant Plaza station NERFINISHED ⓘ Metro Center station NERFINISHED ⓘ Minnesota Avenue station NERFINISHED ⓘ Rosslyn station NERFINISHED ⓘ Stadium–Armory station NERFINISHED ⓘ |
| sharesTracksWith |
Blue Line
NERFINISHED
ⓘ
Silver Line NERFINISHED ⓘ |
| system | Washington Metro NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| usesFareSystem | SmarTrip NERFINISHED ⓘ |
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 Orange Line Description of subject: The Metrorail Orange Line is a Washington, D.C. Metro rapid transit line that runs east–west through the region, connecting downtown D.C. with Arlington, Fairfax County, and beyond.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.