Grand Central Madison station
E815436
Grand Central Madison station is a major Long Island Rail Road terminal beneath Grand Central Terminal in Midtown Manhattan, created to bring LIRR service directly to Manhattan’s East Side.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Grand Central Madison | 3 |
| Grand Central Madison LIRR terminal | 1 |
| Grand Central Madison station canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9702890 — 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: Grand Central Madison station Context triple: [East Side Access, includes, Grand Central Madison station]
-
A.
LaSalle/Van Buren station
LaSalle/Van Buren station is a Chicago 'L' rapid transit stop in the Loop that serves multiple lines and connects to the nearby LaSalle Street commuter rail station.
-
B.
Chicago Union Station
Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
-
C.
Civic Center Station
Civic Center Station is a major San Francisco Bay Area Rapid Transit (BART) and Muni Metro subway station serving the heart of San Francisco near key civic and cultural institutions.
-
D.
Brookfield station
Brookfield station is a commuter rail stop in Brookfield, Illinois, serving passengers on Metra’s BNSF Railway Line between Chicago and its western suburbs.
-
E.
Franklin Park station
Franklin Park station is a commuter rail stop in Franklin Park, Illinois, served by Metra’s North Central Service and Milwaukee District/West lines.
- 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: Grand Central Madison station Target entity description: Grand Central Madison station is a major Long Island Rail Road terminal beneath Grand Central Terminal in Midtown Manhattan, created to bring LIRR service directly to Manhattan’s East Side.
-
A.
LaSalle/Van Buren station
LaSalle/Van Buren station is a Chicago 'L' rapid transit stop in the Loop that serves multiple lines and connects to the nearby LaSalle Street commuter rail station.
-
B.
Chicago Union Station
Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
-
C.
Civic Center Station
Civic Center Station is a major San Francisco Bay Area Rapid Transit (BART) and Muni Metro subway station serving the heart of San Francisco near key civic and cultural institutions.
-
D.
Brookfield station
Brookfield station is a commuter rail stop in Brookfield, Illinois, serving passengers on Metra’s BNSF Railway Line between Chicago and its western suburbs.
-
E.
Franklin Park station
Franklin Park station is a commuter rail stop in Franklin Park, Illinois, served by Metra’s North Central Service and Milwaukee District/West lines.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Long Island Rail Road station
ⓘ
railway station ⓘ |
| accessible | yes ⓘ |
| borough | Manhattan ⓘ |
| category |
Long Island Rail Road stations in New York City
ⓘ
Railway stations in Manhattan ⓘ |
| code |
GCM (informal abbreviation)
ⓘ
linked to:
GCM
|
| connectsTo |
Grand Central Terminal
ⓘ
New York City Subway at Grand Central–42nd Street ⓘ |
| constructionProjectStart |
East Side Access construction began in the 2000s
ⓘ
linked to:
East Side Access
|
| country |
United States
ⓘ
linked to:
United States of America
|
| depth | deep-level station ⓘ |
| fareSystem |
MTA fare system
ⓘ
linked to:
MTA New York City Subway fare system
|
| hasElevators | yes ⓘ |
| hasEntrances |
Grand Central Terminal concourses
ⓘ
Madison Avenue area ⓘ
linked to:
Madison Avenue
|
| hasEscalators | yes ⓘ |
| hasLevels | multiple concourse levels ⓘ |
| hasRestrooms | yes ⓘ |
| hasRetail | yes ⓘ |
| hasWaitingArea | yes ⓘ |
| locatedUnder | Grand Central Terminal ⓘ |
| location |
Manhattan
ⓘ
Midtown Manhattan ⓘ New York City ⓘ |
| namedAfter | Grand Central Terminal ⓘ |
| openingDate | 2023 ⓘ |
| operator |
MTA Long Island Rail Road
ⓘ
linked to:
Long Island Rail Road
|
| owner | Metropolitan Transportation Authority ⓘ |
| partOf |
East Side Access project
ⓘ
linked to:
East Side Access
MTA Metro-North Railroad and LIRR hub at Grand Central ⓘ |
| platformType | island platform ⓘ |
| primaryFunction | terminal for LIRR trains from Long Island ⓘ |
| purpose | provide LIRR service to Manhattan’s East Side ⓘ |
| railwayLine | Long Island Rail Road ⓘ |
| serves |
Long Island Rail Road Babylon Branch
ⓘ
linked to:
LIRR Babylon Branch
Long Island Rail Road Huntington Branch ⓘ Long Island Rail Road Main Line ⓘ Long Island Rail Road Montauk Branch (diesel service) ⓘ
linked to:
LIRR Montauk Branch
Long Island Rail Road Oyster Bay Branch ⓘ
linked to:
LIRR Oyster Bay Branch
Long Island Rail Road Port Jefferson Branch ⓘ Long Island Rail Road Port Washington Branch ⓘ Long Island Rail Road Ronkonkoma Branch ⓘ |
| servesArea |
Long Island
ⓘ
Manhattan’s East Side ⓘ
linked to:
East Side of Manhattan
|
| structureType | underground station ⓘ |
| ticketing | LIRR ticket machines ⓘ |
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: Grand Central Madison station Description of subject: Grand Central Madison station is a major Long Island Rail Road terminal beneath Grand Central Terminal in Midtown Manhattan, created to bring LIRR service directly to Manhattan’s East Side.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Grand Central Madison station
linked to: Grand Central Madison station
linked to: Grand Central Madison station
linked to: Grand Central Madison station