Port Authority light rail
E550270
Port Authority light rail is a light rail transit system serving the Pittsburgh, Pennsylvania metropolitan area, connecting downtown with surrounding neighborhoods and suburbs.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Port Authority light rail canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5858126 — 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: Port Authority light rail Context triple: [South Hills, hasTransportationLink, Port Authority light rail]
-
A.
Hudson–Bergen Light Rail
The Hudson–Bergen Light Rail is a modern light rail transit system serving waterfront communities and urban centers in Hudson County, New Jersey, providing frequent local service along the Hudson River corridor.
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B.
Newark Light Rail
Newark Light Rail is a light rail transit system serving the city of Newark, New Jersey, connecting downtown, residential neighborhoods, and key regional transit hubs.
-
C.
River Line light rail
River Line light rail is a New Jersey light rail transit service that runs along the Delaware River corridor, connecting Trenton and Camden with multiple intermediate communities.
-
D.
METRO light rail
METRO light rail is a rapid transit system serving the Minneapolis–Saint Paul metropolitan area with multiple color-designated lines connecting key urban, suburban, and airport destinations.
-
E.
DART Light Rail
DART Light Rail is a light rail transit system serving the Dallas–Fort Worth metropolitan area, operated by Dallas Area Rapid Transit.
- 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: Port Authority light rail Target entity description: Port Authority light rail is a light rail transit system serving the Pittsburgh, Pennsylvania metropolitan area, connecting downtown with surrounding neighborhoods and suburbs.
-
A.
Hudson–Bergen Light Rail
The Hudson–Bergen Light Rail is a modern light rail transit system serving waterfront communities and urban centers in Hudson County, New Jersey, providing frequent local service along the Hudson River corridor.
-
B.
Newark Light Rail
Newark Light Rail is a light rail transit system serving the city of Newark, New Jersey, connecting downtown, residential neighborhoods, and key regional transit hubs.
-
C.
River Line light rail
River Line light rail is a New Jersey light rail transit service that runs along the Delaware River corridor, connecting Trenton and Camden with multiple intermediate communities.
-
D.
METRO light rail
METRO light rail is a rapid transit system serving the Minneapolis–Saint Paul metropolitan area with multiple color-designated lines connecting key urban, suburban, and airport destinations.
-
E.
DART Light Rail
DART Light Rail is a light rail transit system serving the Dallas–Fort Worth metropolitan area, operated by Dallas Area Rapid Transit.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
light rail transit system
ⓘ
public transportation system ⓘ railway network ⓘ |
| alsoKnownAs |
Pittsburgh Light Rail
NERFINISHED
ⓘ
The T NERFINISHED ⓘ |
| beganOperation | 1984 ⓘ |
| connects |
Beechview neighborhood
NERFINISHED
ⓘ
Bethel Park, Pennsylvania NERFINISHED ⓘ Castle Shannon, Pennsylvania NERFINISHED ⓘ Dormont, Pennsylvania NERFINISHED ⓘ Downtown Pittsburgh NERFINISHED ⓘ Library, Pennsylvania NERFINISHED ⓘ Mt. Lebanon, Pennsylvania NERFINISHED ⓘ North Shore, Pittsburgh NERFINISHED ⓘ South Hills Village NERFINISHED ⓘ |
| connectsTo |
Pittsburgh regional commuter services
ⓘ
Port Authority bus network NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | overhead catenary ⓘ |
| fareSystem | proof-of-payment ⓘ |
| hasLine |
Blue Line
NERFINISHED
ⓘ
Red Line NERFINISHED ⓘ Silver Line NERFINISHED ⓘ |
| hasRollingStock |
Siemens SD-400
NERFINISHED
ⓘ
Siemens SD-460 NERFINISHED ⓘ |
| hasStation |
Allegheny station
NERFINISHED
ⓘ
First Avenue station NERFINISHED ⓘ Gateway station NERFINISHED ⓘ Library station NERFINISHED ⓘ North Side station NERFINISHED ⓘ South Hills Village station NERFINISHED ⓘ Station Square station NERFINISHED ⓘ Steel Plaza station NERFINISHED ⓘ Wood Street station NERFINISHED ⓘ |
| hasUndergroundSection |
Downtown Pittsburgh subway
ⓘ
North Shore Connector NERFINISHED ⓘ |
| headquartersLocation | Pittsburgh, Pennsylvania NERFINISHED ⓘ |
| numberOfLines | 2 main trunk lines ⓘ |
| operatedBy | Port Authority of Allegheny County NERFINISHED ⓘ |
| owner | Port Authority of Allegheny County NERFINISHED ⓘ |
| partOf | public transit network of Pittsburgh NERFINISHED ⓘ |
| powerSupply | 1500 V DC ⓘ |
| primaryCorridor | Downtown Pittsburgh to South Hills suburbs NERFINISHED ⓘ |
| replaced | Pittsburgh streetcar network NERFINISHED ⓘ |
| serves |
Allegheny County, Pennsylvania
NERFINISHED
ⓘ
Pittsburgh, Pennsylvania NERFINISHED ⓘ |
| systemLength | approximately 26 miles ⓘ |
| transitType | light rail ⓘ |
| usesTrackGauge | standard gauge ⓘ |
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: Port Authority light rail Description of subject: Port Authority light rail is a light rail transit system serving the Pittsburgh, Pennsylvania metropolitan area, connecting downtown with surrounding neighborhoods and suburbs.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.