BMT
E78743
BMT (Brooklyn–Manhattan Transit Corporation) was a major private New York City subway operator whose lines now form one of the primary divisions of the modern NYC Subway system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| BMT canonical | 69 |
How this entity was disambiguated
This entity first appeared as the object of triple T628255 — 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: BMT Context triple: [Times Square–42nd Street subway station, division, BMT]
-
A.
MRT
MRT is the three-letter ISO 3166-1 alpha-3 country code assigned to Mauritania.
-
B.
BMT Division
BMT Division is a specialized organizational unit focused on bone marrow transplantation and related hematologic treatments.
-
C.
HMT
HMT is the commonly used abbreviation for HM Treasury, the United Kingdom government department responsible for economic and financial policy.
-
D.
BOL
BOL is the three-letter ISO 3166-1 alpha-3 country code assigned to Bolivia.
-
E.
B train
The B train is a New York City Subway service that runs on the IND Sixth Avenue Line, providing weekday express service in Manhattan and Brooklyn.
- 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: BMT Target entity description: BMT (Brooklyn–Manhattan Transit Corporation) was a major private New York City subway operator whose lines now form one of the primary divisions of the modern NYC Subway system.
-
A.
MRT
MRT is the three-letter ISO 3166-1 alpha-3 country code assigned to Mauritania.
-
B.
BMT Division
BMT Division is a specialized organizational unit focused on bone marrow transplantation and related hematologic treatments.
-
C.
HMT
HMT is the commonly used abbreviation for HM Treasury, the United Kingdom government department responsible for economic and financial policy.
-
D.
BOL
BOL is the three-letter ISO 3166-1 alpha-3 country code assigned to Bolivia.
-
E.
B train
The B train is a New York City Subway service that runs on the IND Sixth Avenue Line, providing weekday express service in Manhattan and Brooklyn.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
Brooklyn–Manhattan Transit Corporation
ⓘ
defunct company ⓘ rapid transit operator ⓘ |
| abbreviation | BMT ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| divisionOfSystem |
B Division of the New York City Subway
ⓘ
linked to:
BMT Division
|
| fareSystem | shared fare integration with other NYC transit operators after unification ⓘ |
| formsDivisionWith |
IND
ⓘ
IRT ⓘ |
| historicalRole | one of the three original private operators of the New York City Subway ⓘ |
| industry | public transit ⓘ |
| integratedInto | municipal subway system of New York City ⓘ |
| legacy | its lines constitute a major part of the present-day B Division of the NYC Subway ⓘ |
| locatedIn | New York City ⓘ |
| networkType | lettered services in the modern New York City Subway ⓘ |
| operatedIn |
Brooklyn
ⓘ
Manhattan ⓘ |
| operatedLine |
BMT Astoria Line
ⓘ
BMT Brighton Line ⓘ BMT Broadway Line ⓘ BMT Canarsie Line ⓘ BMT Culver Line (historical BMT operation) ⓘ BMT Fourth Avenue Line ⓘ BMT Franklin Avenue Line ⓘ BMT Jamaica Line ⓘ BMT Myrtle Avenue Line ⓘ BMT Nassau Street Line ⓘ BMT Sea Beach Line ⓘ BMT West End Line ⓘ |
| operatedService |
elevated railway
ⓘ
streetcar (through affiliates and predecessors) ⓘ subway railway ⓘ |
| ownership | privately owned prior to municipal takeover ⓘ |
| partOf | New York City Subway ⓘ |
| predecessor | Brooklyn Rapid Transit Company ⓘ |
| servedBorough | Queens (via some lines now in B Division) ⓘ |
| serviceType |
rapid transit
ⓘ
subway ⓘ |
| status | defunct ⓘ |
| successor |
New York City Board of Transportation
ⓘ
New York City Transit Authority ⓘ |
| transportMode | rail ⓘ |
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: BMT Description of subject: BMT (Brooklyn–Manhattan Transit Corporation) was a major private New York City subway operator whose lines now form one of the primary divisions of the modern NYC Subway system.
Referenced by (69)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
BMT
subject linked to:
Astoria–Ditmars Boulevard (historical and/or alternate terminal)
subject linked to:
Montague Street Tunnel (historical patterns)
subject linked to:
New York City Subway City Hall–Broadway station (R,W)