Baltimore Light Rail
E31876
Baltimore Light Rail is a regional light rail transit system serving Baltimore, Maryland, and its surrounding suburbs.
All labels observed (13)
How this entity was disambiguated
This entity first appeared as the object of triple T159634 — 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: Baltimore Light Rail Context triple: [Baltimore Light RailLink, previousName, Baltimore Light Rail]
-
A.
Baltimore Metro SubwayLink
The Baltimore Metro SubwayLink is a rapid transit subway system serving Baltimore, Maryland, providing high-capacity rail service along a primary east–west corridor through the city and into surrounding areas.
-
B.
Huntington Area Rapid Transit
Huntington Area Rapid Transit is the local bus system serving the town of Huntington in Suffolk County, New York.
-
C.
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.
-
D.
Orange Line (Washington Metro)
The Orange Line of the Washington Metro is a rapid transit line in the Washington, D.C. metropolitan area that runs generally east–west, connecting suburbs in Virginia and Maryland with downtown Washington.
-
E.
Blue Line (Washington Metro)
The Blue Line is one of the primary rapid transit lines of the Washington Metro system, running through downtown Washington, D.C., and connecting key locations in Virginia and Maryland.
- 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: Baltimore Light Rail Target entity description: Baltimore Light Rail is a regional light rail transit system serving Baltimore, Maryland, and its surrounding suburbs.
-
A.
Baltimore Metro SubwayLink
The Baltimore Metro SubwayLink is a rapid transit subway system serving Baltimore, Maryland, providing high-capacity rail service along a primary east–west corridor through the city and into surrounding areas.
-
B.
Huntington Area Rapid Transit
Huntington Area Rapid Transit is the local bus system serving the town of Huntington in Suffolk County, New York.
-
C.
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.
-
D.
Orange Line (Washington Metro)
The Orange Line of the Washington Metro is a rapid transit line in the Washington, D.C. metropolitan area that runs generally east–west, connecting suburbs in Virginia and Maryland with downtown Washington.
-
E.
Blue Line (Washington Metro)
The Blue Line is one of the primary rapid transit lines of the Washington Metro system, running through downtown Washington, D.C., and connecting key locations in Virginia and Maryland.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
light rail transit system
ⓘ
public transportation system ⓘ railway system ⓘ |
| category |
Light rail in the United States
ⓘ
Rail transport in Maryland ⓘ Transport in Baltimore ⓘ |
| connectsWith |
Amtrak services at Baltimore Penn Station
ⓘ
linked to:
Pennsylvania Station (Baltimore)
Baltimore Metro SubwayLink ⓘ MARC Train ⓘ local bus routes in Baltimore ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| electrification | overhead lines ⓘ |
| fareSystem | integrated with Maryland Transit Administration fares ⓘ |
| hasFeature |
at-grade segments
ⓘ
dedicated right-of-way segments ⓘ street-running segments ⓘ |
| hasLine |
Blue Line
ⓘ
Yellow Line ⓘ |
| hasService | local passenger service ⓘ |
| hasStation |
BWI Airport station
ⓘ
Camden Yards station ⓘ Glen Burnie station ⓘ
linked to:
Glen Burnie (Cromwell / Glen Burnie) station
Hunt Valley station ⓘ North Avenue station ⓘ Penn Station (Baltimore) light rail stop ⓘ
linked to:
Penn Station (Light RailLink)
|
| locatedIn |
Baltimore
ⓘ
Maryland ⓘ |
| operatedBy | Maryland Transit Administration ⓘ |
| owner | Maryland Transit Administration ⓘ |
| partOf |
Maryland Transit Administration transit network
ⓘ
linked to:
Maryland Transit Administration
|
| primaryHub |
downtown Baltimore
ⓘ
linked to:
Baltimore
|
| publicTransportMode | rail-based urban transit ⓘ |
| region |
Mid-Atlantic United States
ⓘ
linked to:
Mid-Atlantic states
|
| rollingStockType | light rail vehicles ⓘ |
| serves |
Baltimore metropolitan area
ⓘ
linked to:
Baltimore–Washington metropolitan area
Baltimore suburbs ⓘ |
| servesFacility |
Baltimore Penn Station
ⓘ
linked to:
Pennsylvania Station (Baltimore)
Baltimore/Washington International Thurgood Marshall Airport ⓘ M&T Bank Stadium ⓘ Oriole Park at Camden Yards ⓘ |
| terminus |
BWI Airport station
ⓘ
Glen Burnie station ⓘ
linked to:
Glen Burnie (Cromwell / Glen Burnie) station
Hunt Valley station ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | light rail ⓘ |
| uses | overhead catenary power supply ⓘ |
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: Baltimore Light Rail Description of subject: Baltimore Light Rail is a regional light rail transit system serving Baltimore, Maryland, and its surrounding suburbs.
Referenced by (38)
Full triples — surface form annotated when it differs from this entity's canonical label.
Pennsylvania Station (Baltimore)
→
hasPublicTransitConnection
→
Baltimore Light RailLink (nearby stop)
ⓘ
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
subject linked to:
Blue Line
linked to: Baltimore Light Rail
subject linked to:
Yellow Line
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
subject linked to:
Mount Vernon
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail
linked to: Baltimore Light Rail