Union Station (Washington Metro)
E214407
Union Station is a major Washington Metro station in Washington, D.C., serving as a key transit hub connected to the historic Union Station rail terminal and multiple local and regional transportation services.
All labels observed (7)
How this entity was disambiguated
This entity first appeared as the object of triple T1217889 — 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: Union Station (Washington Metro) Context triple: [Red Line (Washington Metro), hasStation, Union Station (Washington Metro)]
-
A.
L'Enfant Plaza station
L'Enfant Plaza station is a major Washington Metro transfer hub in downtown Washington, D.C., serving multiple lines and providing access to nearby federal offices and the National Mall.
-
B.
Crystal City station (Washington Metro)
Crystal City station (Washington Metro) is an underground rapid transit station in Arlington, Virginia, serving the Blue and Yellow Lines and providing access to the Crystal City business district near Reagan National Airport.
-
C.
Farragut West station
Farragut West station is a Washington Metro rapid transit station serving downtown Washington, D.C., near Farragut Square.
-
D.
Foggy Bottom–GWU station
Foggy Bottom–GWU station is a Washington, D.C. Metrorail station on the Blue, Orange, and Silver lines serving the George Washington University campus and nearby landmarks including the Kennedy Center.
-
E.
Dupont Circle station
Dupont Circle station is a Washington, D.C. Metro station on the Red Line serving the Dupont Circle neighborhood and nearby areas such as Kalorama.
- 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: Union Station (Washington Metro) Target entity description: Union Station is a major Washington Metro station in Washington, D.C., serving as a key transit hub connected to the historic Union Station rail terminal and multiple local and regional transportation services.
-
A.
L'Enfant Plaza station
L'Enfant Plaza station is a major Washington Metro transfer hub in downtown Washington, D.C., serving multiple lines and providing access to nearby federal offices and the National Mall.
-
B.
Crystal City station (Washington Metro)
Crystal City station (Washington Metro) is an underground rapid transit station in Arlington, Virginia, serving the Blue and Yellow Lines and providing access to the Crystal City business district near Reagan National Airport.
-
C.
Farragut West station
Farragut West station is a Washington Metro rapid transit station serving downtown Washington, D.C., near Farragut Square.
-
D.
Foggy Bottom–GWU station
Foggy Bottom–GWU station is a Washington, D.C. Metrorail station on the Blue, Orange, and Silver lines serving the George Washington University campus and nearby landmarks including the Kennedy Center.
-
E.
Dupont Circle station
Dupont Circle station is a Washington, D.C. Metro station on the Red Line serving the Dupont Circle neighborhood and nearby areas such as Kalorama.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Washington Metro station
ⓘ
rapid transit station ⓘ underground railway station ⓘ |
| accessible | yes ⓘ |
| adjacentTo |
Union Station
ⓘ
surface form:
Union Station rail terminal
|
| city | Washington, D.C. ⓘ |
| connectsTo |
Maryland suburbs via Red Line
ⓘ
Downtown Washington, D.C. ⓘ
surface form:
downtown Washington, D.C.
western Montgomery County via Red Line ⓘ |
| country | United States of America ⓘ |
| electrification | third rail ⓘ |
| fareSystem | SmarTrip ⓘ |
| fareZone | 1 ⓘ |
| hasBicycleFacilities | yes ⓘ |
| hasConnection |
Amtrak
ⓘ
DC Circulator bus system ⓘ
surface form:
DC Circulator
MARC Train ⓘ Metrobus ⓘ Union Station (Washington Metro) self-linksurface differs ⓘ
surface form:
Union Station (Washington, D.C.)
Virginia Railway Express ⓘ intercity bus services ⓘ local bus services ⓘ street-level taxi services ⓘ |
| hasEntrance |
First Street NE
ⓘ
Massachusetts Avenue NE vicinity ⓘ inside Union Station headhouse ⓘ |
| hasParkingNearby | yes ⓘ |
| hasService | all-day Red Line service ⓘ |
| isMajorTransferPoint | yes ⓘ |
| line |
Washington Metro Red Line
ⓘ
surface form:
Red Line (Washington Metro)
|
| locatedIn |
NoMa
ⓘ
surface form:
NoMa neighborhood
Northeast Washington, D.C. ⓘ Washington, D.C. ⓘ |
| numberOfPlatforms | 1 ⓘ |
| numberOfTracks | 2 ⓘ |
| opened | 1976 ⓘ |
| openingDate | March 27, 1976 ⓘ |
| operatedBy | Washington Metropolitan Area Transit Authority ⓘ |
| ownedBy | Washington Metropolitan Area Transit Authority ⓘ |
| partOf | Washington Metro ⓘ |
| platformType | island platform ⓘ |
| role |
intermodal transit center
ⓘ
regional transportation hub ⓘ |
| serves | Washington, D.C. ⓘ |
| stationCode | B35 ⓘ |
| structureType | underground ⓘ |
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: Union Station (Washington Metro) Description of subject: Union Station is a major Washington Metro station in Washington, D.C., serving as a key transit hub connected to the historic Union Station rail terminal and multiple local and regional transportation services.
Referenced by (23)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Red Line (Washington Metro)
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Washington Metro at Washington Union Station
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Union Station (Washington, D.C.)
subject surface form:
Daniel Burnham
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Washington Union Station
this entity surface form:
Union Station Bus Terminal (via Union Station complex)
this entity surface form:
Washington Union Station
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Washington Union Station
subject surface form:
Union Square (Washington, D.C.)
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Union Station (Washington, D.C.)
Union Station (Washington Metro)
→
hasConnection
→
Union Station (Washington Metro)
self-linksurface differs
ⓘ
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Washington Union Station
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Union Station Metro station
this entity surface form:
Union Station Washington, D.C.
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Union Station (Washington, D.C.)
this entity surface form:
Union Station (Washington, D.C.)