Washington Metro at Union Station
E63426
Washington Metro at Union Station is a major rapid transit hub in Washington, D.C., connecting multiple Metro lines with Amtrak, commuter rail, and intercity bus services.
All labels observed (5)
How this entity was disambiguated
This entity first appeared as the object of triple T500529 — 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: Washington Metro at Union Station Context triple: [Fredericksburg Line, interchangesWith, Washington Metro at Union Station]
-
A.
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.
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B.
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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C.
Arlington station
Arlington station is an underground light rail stop on Boston's MBTA Green Line located near the Back Bay and Boston Public Garden.
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D.
Federal Triangle station
Federal Triangle station is a Washington Metro rapid transit station located in downtown Washington, D.C., serving the Blue, Orange, and Silver lines near key federal buildings and the National Mall.
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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: Washington Metro at Union Station Target entity description: Washington Metro at Union Station is a major rapid transit hub in Washington, D.C., connecting multiple Metro lines with Amtrak, commuter rail, and intercity bus services.
-
A.
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.
-
B.
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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C.
Arlington station
Arlington station is an underground light rail stop on Boston's MBTA Green Line located near the Back Bay and Boston Public Garden.
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D.
Federal Triangle station
Federal Triangle station is a Washington Metro rapid transit station located in downtown Washington, D.C., serving the Blue, Orange, and Silver lines near key federal buildings and the National Mall.
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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 |
rapid transit station
ⓘ
transportation hub ⓘ |
| adjacentTo |
Union Station (Washington Metro)
ⓘ
surface form:
Union Station (Washington, D.C.)
|
| connectsTo |
MARC Train
ⓘ
Union Station ⓘ
surface form:
Union Station (Amtrak)
Virginia Railway Express ⓘ
surface form:
VRE (Virginia Railway Express)
intercity bus services at Union Station ⓘ local bus services at Union Station ⓘ parking facilities at Union Station ⓘ taxi stands at Union Station ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| fareControl | gated fare area ⓘ |
| fareSystem | SmarTrip ⓘ |
| hasAccessibility |
elevators
ⓘ
escalators ⓘ |
| hasConnection | pedestrian passage to Union Station rail terminal ⓘ |
| hasFacility |
bicycle racks
ⓘ
fare vending machines ⓘ station mezzanine ⓘ |
| hasRole | gateway to Capitol Hill area ⓘ |
| hasService | peak and off-peak Red Line trains ⓘ |
| hasSignage | bilingual English–Spanish wayfinding signs ⓘ |
| integratedWith | Union Station multimodal transportation complex ⓘ |
| isMajorTransferPointFor |
intercity bus
ⓘ
local bus ⓘ regional rail ⓘ |
| locatedIn | Washington, D.C. ⓘ |
| locatedOn |
Washington Metro Red Line
ⓘ
surface form:
Red Line between Judiciary Square and Rhode Island Ave–Brentwood
|
| near |
National Postal Museum
ⓘ
United States Capitol ⓘ |
| numberOfPlatforms | 1 ⓘ |
| numberOfTracks | 2 ⓘ |
| operatedBy | Washington Metropolitan Area Transit Authority ⓘ |
| ownedBy | Washington Metropolitan Area Transit Authority ⓘ |
| partOf | Washington Metro ⓘ |
| platformType | island platform ⓘ |
| safetyFeatures |
CCTV surveillance
ⓘ
emergency call boxes ⓘ public address system ⓘ |
| serves |
Red Line
ⓘ
commuters ⓘ intercity rail passengers ⓘ tourists ⓘ |
| servesCity | Washington, D.C. ⓘ |
| structureType | underground station ⓘ |
| ticketingSystem |
SmarTrip
ⓘ
surface form:
SmarTrip contactless card
|
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: Washington Metro at Union Station Description of subject: Washington Metro at Union Station is a major rapid transit hub in Washington, D.C., connecting multiple Metro lines with Amtrak, commuter rail, and intercity bus services.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Metrorail at Washington Union Station
this entity surface form:
Amtrak at Union Station
this entity surface form:
Washington Metro at Washington Union Station
this entity surface form:
Union Station, Washington, D.C. (alterations and additions)
this entity surface form:
Amtrak at Union Station