Interborough Rapid Transit Company
E18167
The Interborough Rapid Transit Company was the private operator that built and ran New York City's first subway lines in the early 20th century before they were incorporated into the modern NYC Subway system.
All labels observed (11)
How this entity was disambiguated
This entity first appeared as the object of triple T97647 — 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: Interborough Rapid Transit Company Context triple: [IRT Division, derivedFrom, Interborough Rapid Transit Company]
-
A.
Metropolitan Transportation Authority
The Metropolitan Transportation Authority is the public agency responsible for operating and overseeing much of the mass transit and commuter rail systems in the New York City metropolitan area.
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B.
Tompkins Consolidated Area Transit
Tompkins Consolidated Area Transit is the primary public bus system serving Ithaca and the surrounding Tompkins County region in New York.
-
C.
New York City Subway
The New York City Subway is one of the world’s largest and busiest rapid transit systems, serving the five boroughs of New York City with extensive 24/7 underground and elevated rail service.
-
D.
Chicago Rapid Transit Company
The Chicago Rapid Transit Company was the private operator of Chicago’s elevated “L” rail system in the early 20th century before public transit was consolidated under the Chicago Transit Authority.
-
E.
NJ Transit
NJ Transit is New Jersey’s statewide public transportation agency, operating commuter rail, bus, and light rail services connecting cities and suburbs within the state and to neighboring regions like New York and Philadelphia.
- 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: Interborough Rapid Transit Company Target entity description: The Interborough Rapid Transit Company was the private operator that built and ran New York City's first subway lines in the early 20th century before they were incorporated into the modern NYC Subway system.
-
A.
Metropolitan Transportation Authority
The Metropolitan Transportation Authority is the public agency responsible for operating and overseeing much of the mass transit and commuter rail systems in the New York City metropolitan area.
-
B.
Tompkins Consolidated Area Transit
Tompkins Consolidated Area Transit is the primary public bus system serving Ithaca and the surrounding Tompkins County region in New York.
-
C.
New York City Subway
The New York City Subway is one of the world’s largest and busiest rapid transit systems, serving the five boroughs of New York City with extensive 24/7 underground and elevated rail service.
-
D.
Chicago Rapid Transit Company
The Chicago Rapid Transit Company was the private operator of Chicago’s elevated “L” rail system in the early 20th century before public transit was consolidated under the Chicago Transit Authority.
-
E.
NJ Transit
NJ Transit is New Jersey’s statewide public transportation agency, operating commuter rail, bus, and light rail services connecting cities and suburbs within the state and to neighboring regions like New York and Philadelphia.
- F. None of above. chosen
Statements (59)
| Predicate | Object |
|---|---|
| instanceOf |
defunct company
ⓘ
public transport operator ⓘ rapid transit company ⓘ |
| acquiredBy |
New York City
ⓘ
surface form:
City of New York
|
| alsoKnownAs | IRT ⓘ |
| boroughServed |
Brooklyn
ⓘ
Manhattan ⓘ The Bronx ⓘ |
| cityServed | New York City ⓘ |
| competedWith |
Brooklyn Rapid Transit Company
ⓘ
Brooklyn Rapid Transit Company ⓘ
surface form:
Brooklyn–Manhattan Transit Corporation
|
| contractedWith |
New York City
ⓘ
surface form:
City of New York
|
| contractType | dual contracts ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dissolved | 1940s ⓘ |
| dualContractsDate | 1913 ⓘ |
| fare | 5-cent fare (initially) ⓘ |
| firstSubwayOpeningDate | 1904-10-27 ⓘ |
| firstSubwayOpeningSegment | City Hall to 145th Street ⓘ |
| foundedBy |
August Belmont Jr.
ⓘ
John B. McDonald ⓘ |
| headquartersLocation |
Manhattan
ⓘ
New York City ⓘ |
| inception | 1902 ⓘ |
| industry |
public transportation
ⓘ
rail transport ⓘ |
| legacy |
IRT A Division subway cars
ⓘ
surface form:
IRT Division of the modern New York City Subway
|
| nationalizationDate | 1940-06-12 ⓘ |
| notableWork | construction of first NYC subway ⓘ |
| openedLine |
Broadway–Seventh Avenue Line
ⓘ
surface form:
IRT Broadway–Seventh Avenue Line
Dyre Avenue Line ⓘ
surface form:
IRT Dyre Avenue Line
Eastern Parkway Line ⓘ
surface form:
IRT Eastern Parkway Line
Flushing Line ⓘ
surface form:
IRT Flushing Line
Jerome Avenue Line ⓘ
surface form:
IRT Jerome Avenue Line
Lenox Avenue Line ⓘ
surface form:
IRT Lenox Avenue Line
Lexington Avenue Line ⓘ
surface form:
IRT Lexington Avenue Line
New Lots Line ⓘ
surface form:
IRT New Lots Line
Nostrand Avenue Line ⓘ
surface form:
IRT Nostrand Avenue Line
Pelham Line ⓘ
surface form:
IRT Pelham Line
White Plains Road Line ⓘ
surface form:
IRT White Plains Road Line
|
| operated |
IRT Division
ⓘ
Manhattan Railway elevated lines ⓘ New York City Subway ⓘ first New York City subway line ⓘ |
| operatingArea |
Brooklyn
ⓘ
Manhattan ⓘ New York City ⓘ The Bronx ⓘ |
| owned |
Interborough Rapid Transit Company
self-linksurface differs
ⓘ
surface form:
Manhattan Railway Company (lease and control)
|
| powerSupply | third rail electrification ⓘ |
| serviceType |
elevated railway operation
ⓘ
rapid transit ⓘ subway operation ⓘ |
| successor |
Board of Transportation of the City of New York
ⓘ
Board of Transportation of the City of New York ⓘ
surface form:
New York City Transit Authority
|
| trackGauge | standard gauge ⓘ |
| transportMode |
elevated railway
ⓘ
underground railway ⓘ |
| usedRollingStockStandard | IRT-sized subway cars ⓘ |
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: Interborough Rapid Transit Company Description of subject: The Interborough Rapid Transit Company was the private operator that built and ran New York City's first subway lines in the early 20th century before they were incorporated into the modern NYC Subway system.
Referenced by (57)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Interborough Rapid Transit Company original subway
Interborough Rapid Transit Company
→
owned
→
Interborough Rapid Transit Company
self-linksurface differs
ⓘ
this entity surface form:
Manhattan Railway Company (lease and control)
this entity surface form:
Interborough Rapid Transit Company original system
this entity surface form:
Interborough Rapid Transit Division
subject surface form:
Independent Subway System
this entity surface form:
Interborough Rapid Transit Division
this entity surface form:
Interborough Rapid Transit Company system
this entity surface form:
Interborough Rapid Transit Company (historical)
this entity surface form:
Interborough Rapid Transit system
IRT Lexington Avenue Line trunk in Manhattan
→
historicalOperator
→
Interborough Rapid Transit Company
ⓘ
this entity surface form:
Interborough Rapid Transit Division
IRT White Plains Road Line at 149th Street–Grand Concourse
→
partOfNetwork
→
Interborough Rapid Transit Company
ⓘ
this entity surface form:
Interborough Rapid Transit Company original network
subject surface form:
IRT Flushing Line
this entity surface form:
Interborough Rapid Transit Division
168th Street (IRT Broadway–Seventh Avenue Line)
→
openedAsPartOf
→
Interborough Rapid Transit Company
ⓘ
Marble Hill–225th Street (IRT Broadway–Seventh Avenue Line)
→
openedBy
→
Interborough Rapid Transit Company
ⓘ
116th Street–Columbia University subway station
→
originalOperator
→
Interborough Rapid Transit Company
ⓘ
subject surface form:
116th Street–Columbia University
this entity surface form:
Interborough Rapid Transit Company (historical)
167th Street station on the IRT Jerome Avenue Line
→
openedBy
→
Interborough Rapid Transit Company
ⓘ
subject surface form:
167th Street station (IRT Jerome Avenue Line)