MTA LIRR M7
E815437
The MTA LIRR M7 is a fleet of electric multiple-unit commuter rail cars used by the Long Island Rail Road for high-frequency passenger service in the New York metropolitan area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| MTA LIRR M7 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9702894 — 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: MTA LIRR M7 Context triple: [East Side Access, primaryRollingStock, MTA LIRR M7]
-
A.
LIRR Babylon Branch
The LIRR Babylon Branch is a major electrified commuter rail line on the Long Island Rail Road that runs from Jamaica in Queens through Nassau County to Babylon in Suffolk County.
-
B.
Long Island Rail Road
Long Island Rail Road is a major commuter rail system serving Long Island and parts of New York City, known as one of the busiest and oldest railroads in the United States.
-
C.
LIRR Port Jefferson Branch
The LIRR Port Jefferson Branch is a Long Island Rail Road commuter rail line in New York that runs from Hicksville through northern Long Island to the village of Port Jefferson.
-
D.
LIRR Far Rockaway Branch
The LIRR Far Rockaway Branch is a commuter rail line of the Long Island Rail Road that runs between Far Rockaway in Queens and Jamaica, providing service to southeastern Queens and connections to Manhattan.
-
E.
LIRR Hempstead Branch
The LIRR Hempstead Branch is a Long Island Rail Road commuter rail line in New York that runs between Hempstead and major hubs in Queens and Manhattan.
- 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: MTA LIRR M7 Target entity description: The MTA LIRR M7 is a fleet of electric multiple-unit commuter rail cars used by the Long Island Rail Road for high-frequency passenger service in the New York metropolitan area.
-
A.
LIRR Babylon Branch
The LIRR Babylon Branch is a major electrified commuter rail line on the Long Island Rail Road that runs from Jamaica in Queens through Nassau County to Babylon in Suffolk County.
-
B.
Long Island Rail Road
Long Island Rail Road is a major commuter rail system serving Long Island and parts of New York City, known as one of the busiest and oldest railroads in the United States.
-
C.
LIRR Port Jefferson Branch
The LIRR Port Jefferson Branch is a Long Island Rail Road commuter rail line in New York that runs from Hicksville through northern Long Island to the village of Port Jefferson.
-
D.
LIRR Far Rockaway Branch
The LIRR Far Rockaway Branch is a commuter rail line of the Long Island Rail Road that runs between Far Rockaway in Queens and Jamaica, providing service to southeastern Queens and connections to Manhattan.
-
E.
LIRR Hempstead Branch
The LIRR Hempstead Branch is a Long Island Rail Road commuter rail line in New York that runs between Hempstead and major hubs in Queens and Manhattan.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail car
ⓘ
electric multiple unit ⓘ passenger rail vehicle ⓘ |
| category |
Long Island Rail Road rolling stock
ⓘ
electric multiple units of the United States ⓘ |
| country | United States of America ⓘ |
| designedFor | high-platform stations ⓘ |
| electrificationSystem | 750 V DC third rail ⓘ |
| gauge | standard gauge ⓘ |
| locatedInTimeZone | Eastern Time Zone ⓘ |
| network | MTA Long Island Rail Road network ⓘ |
| operator |
Long Island Rail Road
ⓘ
MTA Long Island Rail Road ⓘ
linked to:
Long Island Rail Road
|
| operatorType | public transit operator ⓘ |
| owner | Metropolitan Transportation Authority ⓘ |
| partOf |
LIRR electric fleet
ⓘ
linked to:
Long Island Rail Road rolling stock
|
| powerCollectionMethod | third rail shoe ⓘ |
| primaryTerminus |
Atlantic Terminal
ⓘ
Long Island City station ⓘ Penn Station (New York) ⓘ
linked to:
Penn Station (New York City)
|
| railwayLineUsed |
Long Island Rail Road network
ⓘ
linked to:
Long Island Rail Road
|
| railwaySignalingSystem | LIRR signal system ⓘ |
| regionServed |
Brooklyn
ⓘ
Long Island ⓘ Manhattan ⓘ Queens ⓘ |
| safetySystem |
automatic train control
ⓘ
automatic train stop ⓘ cab signaling ⓘ |
| serves | New York metropolitan area ⓘ |
| serviceType |
commuter rail
ⓘ
high-frequency passenger service ⓘ |
| trackGauge | 1435 mm ⓘ |
| tractionType | electric ⓘ |
| usedFor |
commuter transportation
ⓘ
suburban passenger service ⓘ |
| usedOn |
Atlantic Branch
ⓘ
Harold Interlocking–Penn Station approaches ⓘ
linked to:
Harold Interlocking, Queens
LIRR Babylon Branch ⓘ LIRR Far Rockaway Branch ⓘ LIRR Hempstead Branch ⓘ LIRR Long Beach Branch ⓘ LIRR Main Line ⓘ
linked to:
Long Island Rail Road Main Line
LIRR Montauk Branch (electrified portion) ⓘ
linked to:
LIRR Montauk Branch
LIRR Oyster Bay Branch (electrified portion) ⓘ
linked to:
LIRR Oyster Bay Branch
LIRR Port Jefferson Branch (electrified portion) ⓘ
linked to:
LIRR Port Jefferson Branch
LIRR Port Washington Branch ⓘ
linked to:
Long Island Rail Road Port Washington Branch
LIRR Ronkonkoma Branch ⓘ
linked to:
Long Island Rail Road Ronkonkoma Branch
LIRR West Hempstead Branch ⓘ |
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: MTA LIRR M7 Description of subject: The MTA LIRR M7 is a fleet of electric multiple-unit commuter rail cars used by the Long Island Rail Road for high-frequency passenger service in the New York metropolitan area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.