Washington Metropolitan Area Transit Authority
E2776
The Washington Metropolitan Area Transit Authority is the agency that manages public transportation services, including Metrorail and Metrobus, in the Washington, D.C. metropolitan region.
All labels observed (12)
How this entity was disambiguated
This entity first appeared as the object of triple T11063 — 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 Metropolitan Area Transit Authority Context triple: [Washington Metro, operatedBy, Washington Metropolitan Area Transit Authority]
-
A.
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.
-
B.
Metropolitan Washington Airports Authority
The Metropolitan Washington Airports Authority is an independent regional agency that manages and operates major airports serving the Washington, D.C. metropolitan area.
-
C.
Union Station Redevelopment Corporation
Union Station Redevelopment Corporation is a nonprofit organization responsible for managing, preserving, and overseeing the redevelopment of Washington, D.C.’s historic Union Station.
-
D.
Chicago Transit Authority
The Chicago Transit Authority is the primary public transportation agency serving Chicago and several surrounding suburbs, operating the city’s extensive network of buses and rapid transit trains.
-
E.
Virginia Railway Express
Virginia Railway Express is a commuter rail service that connects Northern Virginia suburbs with Washington, D.C., primarily serving daily work commuters.
- 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 Metropolitan Area Transit Authority Target entity description: The Washington Metropolitan Area Transit Authority is the agency that manages public transportation services, including Metrorail and Metrobus, in the Washington, D.C. metropolitan region.
-
A.
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.
-
B.
Metropolitan Washington Airports Authority
The Metropolitan Washington Airports Authority is an independent regional agency that manages and operates major airports serving the Washington, D.C. metropolitan area.
-
C.
Los Angeles County Metropolitan Transportation Authority
The Los Angeles County Metropolitan Transportation Authority is the primary public transit agency for Los Angeles County, operating and overseeing the region’s bus and rail systems.
-
D.
Union Station Redevelopment Corporation
Union Station Redevelopment Corporation is a nonprofit organization responsible for managing, preserving, and overseeing the redevelopment of Washington, D.C.’s historic Union Station.
-
E.
Chicago Transit Authority
The Chicago Transit Authority is the primary public transportation agency serving Chicago and several surrounding suburbs, operating the city’s extensive network of buses and rapid transit trains.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
government agency
ⓘ
interstate compact agency ⓘ public transit agency ⓘ |
| brandName | Metro ⓘ |
| busSystemName | Metrobus ⓘ |
| compactParties |
Virginia
ⓘ
surface form:
Commonwealth of Virginia
District of Columbia ⓘ Maryland ⓘ
surface form:
State of Maryland
United States government ⓘ
surface form:
United States federal government
|
| country |
United States of America
ⓘ
surface form:
United States
|
| dateFounded | 1967 ⓘ |
| fareSystem | SmarTrip ⓘ |
| formedBy | interstate compact ⓘ |
| fundingSource |
fare revenue
ⓘ
federal grants ⓘ local subsidies ⓘ state subsidies ⓘ |
| governingBody | Board of Directors ⓘ |
| headquartersBuilding | Jackson Graham Building ⓘ |
| headquartersLocation | Washington, D.C. ⓘ |
| legalStatus | interstate compact agency ⓘ |
| manages |
MetroAccess
ⓘ
Metrobus ⓘ Washington Metro ⓘ
surface form:
Metrorail
Washington Metro ⓘ |
| operates |
heavy rail rapid transit system
ⓘ
paratransit service ⓘ regional bus network ⓘ |
| paratransitSystemName | MetroAccess ⓘ |
| primaryMode |
bus
ⓘ
rail ⓘ |
| providesServiceType |
mass transit
ⓘ
paratransit ⓘ public transportation ⓘ |
| railSystemName |
Washington Metro
ⓘ
surface form:
Metrorail
|
| serves |
District of Columbia
ⓘ
Maryland ⓘ Virginia ⓘ Washington metropolitan area ⓘ
surface form:
Washington, D.C. metropolitan area
|
| serviceAreaIncludes |
Arlington, Virginia
ⓘ
surface form:
Arlington County, Virginia
City of Alexandria, Virginia ⓘ City of Fairfax ⓘ
surface form:
City of Fairfax, Virginia
City of Falls Church ⓘ
surface form:
City of Falls Church, Virginia
Fairfax County, Virginia ⓘ Montgomery County ⓘ
surface form:
Montgomery County, Maryland
Prince George’s County, Maryland ⓘ
surface form:
Prince George's County, Maryland
Washington, D.C. ⓘ |
| shortName |
Washington Metropolitan Area Transit Authority
self-linksurface differs
ⓘ
surface form:
WMATA
|
| website | https://www.wmata.com ⓘ |
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 Metropolitan Area Transit Authority Description of subject: The Washington Metropolitan Area Transit Authority is the agency that manages public transportation services, including Metrorail and Metrobus, in the Washington, D.C. metropolitan region.
Referenced by (411)
Full triples — surface form annotated when it differs from this entity's canonical label.
Washington Metro (L’Enfant Plaza station nearby)
→
operator
→
Washington Metropolitan Area Transit Authority
ⓘ
subject surface form:
Washington Metro
Washington Metro (L’Enfant Plaza station nearby)
→
ownedBy
→
Washington Metropolitan Area Transit Authority
ⓘ
subject surface form:
L’Enfant Plaza station
subject surface form:
Medical Center station
subject surface form:
Medical Center station
Judiciary Square station (Washington Metro Red Line)
→
operatedBy
→
Washington Metropolitan Area Transit Authority
ⓘ
subject surface form:
Judiciary Square station