Main Line

E36459

Main Line is the primary rail corridor of the Long Island Rail Road, running from New York City through central Long Island and serving as a backbone for many of its branch lines.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (2)

Label Occurrences
Main Line canonical 3
Main Line (eastern segment) 1

Statements (50)

Predicate Object
instanceOf commuter rail line
railway line
connects New York City
central Long Island
country United States of America
surface form: United States
easternTerminus Greenport station
Ronkonkoma station
electrification 750 V DC third rail (western portion)
hasBranch Hempstead Branch
Montauk Branch
Oyster Bay Branch
Port Jefferson Branch
Port Washington Branch
Ronkonkoma Branch
hasStation Bethpage station
Brentwood station
Carle Place station
Central Islip station
Deer Park station
Floral Park station
Greenport station
Hicksville station
Jamaica Station
surface form: Jamaica station

Merillon Avenue station
Mineola station
New Hyde Park station
Queens Village station
Ronkonkoma station
Westbury station
Wyandanch station
junctionAt Harold Interlocking
Jamaica Station
surface form: Jamaica station
locatedIn Long Island
New York
surface form: New York State
opened 19th century
operator Long Island Rail Road
owner Metropolitan Transportation Authority
partOf Long Island Rail Road
surface form: Long Island Rail Road network
passesThrough Nassau County, New York
surface form: Nassau County

Queens
Suffolk County, New York
surface form: Suffolk County
role backbone for many LIRR branch lines
primary rail corridor of the Long Island Rail Road
serviceType commuter rail
terminus Grand Central Madison
Long Island City station
Penn Station (New York City)
surface form: Penn Station
trackGauge standard gauge
usedBy diesel locomotives
electric multiple units

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: Main Line
Description of subject: Main Line is the primary rail corridor of the Long Island Rail Road, running from New York City through central Long Island and serving as a backbone for many of its branch lines.

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Long Island Rail Road (controlling interest for many years) hasLine Main Line
subject surface form: Long Island Rail Road
Greenport Branch lineNumber Main Line
this entity surface form: Main Line (eastern segment)