7 Subway Extension
E639825
The 7 Subway Extension is a New York City transit project that extended the IRT Flushing Line (7 train) westward to serve the Hudson Yards redevelopment area on Manhattan’s Far West Side.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 7 Subway Extension canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7074895 — 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: 7 Subway Extension Context triple: [34th Street–Hudson Yards, partOfProject, 7 Subway Extension]
-
A.
Eidan Subway
Eidan Subway was the former name of Tokyo’s main rapid transit system, operated by the Teito Rapid Transit Authority before it became Tokyo Metro.
-
B.
Second Avenue Subway
The Second Avenue Subway is a New York City Subway line on Manhattan’s East Side, built to relieve congestion on the Lexington Avenue Line and long envisioned as a major north–south transit corridor.
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C.
Union subway station
Union subway station is a major Toronto Transit Commission (TTC) rapid transit station in downtown Toronto that serves as a key interchange between subway lines and regional rail services.
-
D.
Sheppard subway
Sheppard subway is a Toronto Transit Commission rapid transit line in North York that runs east–west along Sheppard Avenue.
-
E.
IRT Nostrand Avenue Line extension
The IRT Nostrand Avenue Line extension was a New York City Subway expansion project that extended service deeper into Brooklyn along Nostrand Avenue beyond its original terminus.
- 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: 7 Subway Extension Target entity description: The 7 Subway Extension is a New York City transit project that extended the IRT Flushing Line (7 train) westward to serve the Hudson Yards redevelopment area on Manhattan’s Far West Side.
-
A.
Eidan Subway
Eidan Subway was the former name of Tokyo’s main rapid transit system, operated by the Teito Rapid Transit Authority before it became Tokyo Metro.
-
B.
Second Avenue Subway
The Second Avenue Subway is a New York City Subway line on Manhattan’s East Side, built to relieve congestion on the Lexington Avenue Line and long envisioned as a major north–south transit corridor.
-
C.
Union subway station
Union subway station is a major Toronto Transit Commission (TTC) rapid transit station in downtown Toronto that serves as a key interchange between subway lines and regional rail services.
-
D.
Sheppard subway
Sheppard subway is a Toronto Transit Commission rapid transit line in North York that runs east–west along Sheppard Avenue.
-
E.
IRT Nostrand Avenue Line extension
The IRT Nostrand Avenue Line extension was a New York City Subway expansion project that extended service deeper into Brooklyn along Nostrand Avenue beyond its original terminus.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway infrastructure project
ⓘ
railway line extension ⓘ |
| associatedWithAdministration | Michael R. Bloomberg administration NERFINISHED ⓘ |
| borough | Manhattan ⓘ |
| connectsLine | 7 train ⓘ |
| connectsWith | Times Square–42nd Street station NERFINISHED ⓘ |
| constructionMethod | tunnel boring machine ⓘ |
| constructionStartDate | 2007 ⓘ |
| country | United States of America ⓘ |
| depthCharacteristic | one of the deepest stations in the New York City Subway system ⓘ |
| electrification | 600 V DC third rail ⓘ |
| extends | IRT Flushing Line NERFINISHED ⓘ |
| fareSystem | Metropolitan Transportation Authority fare system ⓘ |
| fundedBy |
City of New York
NERFINISHED
ⓘ
Hudson Yards Infrastructure Corporation NERFINISHED ⓘ |
| includesFeature |
air-tempered station environment at 34th Street–Hudson Yards
ⓘ
high-capacity elevators at 34th Street–Hudson Yards ⓘ |
| includesStructure |
deep-bore tunnel
ⓘ
emergency egress shafts ⓘ ventilation structures ⓘ |
| lineColor | purple ⓘ |
| lineDesignation | 7 ⓘ |
| locatedIn |
Manhattan
ⓘ
New York City ⓘ New York State NERFINISHED ⓘ |
| newStation | 34th Street–Hudson Yards NERFINISHED ⓘ |
| numberOfNewStations | 1 ⓘ |
| opened | September 13, 2015 ⓘ |
| openingYear | 2015 ⓘ |
| operator |
Metropolitan Transportation Authority
ⓘ
New York City Transit Authority NERFINISHED ⓘ |
| owner |
New York City
ⓘ
surface form:
City of New York
|
| partOf | IRT Flushing Line NERFINISHED ⓘ |
| planningAgency |
Metropolitan Transportation Authority
NERFINISHED
ⓘ
New York City Department of City Planning NERFINISHED ⓘ |
| platformTypeAtNewStation | island platform ⓘ |
| purpose |
to provide subway access to the Hudson Yards redevelopment area
ⓘ
to support economic development on Manhattan’s Far West Side ⓘ |
| relatedToProject | Hudson Yards Redevelopment Project NERFINISHED ⓘ |
| serves | 7 train NERFINISHED ⓘ |
| servesArea |
Hudson Yards
NERFINISHED
ⓘ
Manhattan’s Far West Side NERFINISHED ⓘ |
| serviceType | rapid transit ⓘ |
| system | New York City Subway ⓘ |
| terminus | 34th Street–Hudson Yards station NERFINISHED ⓘ |
| trackGauge | 1,435 mm standard gauge ⓘ |
| usesRollingStock |
A Division subway cars
ⓘ
R188 subway cars ⓘ |
| westernTerminusOf | IRT Flushing Line NERFINISHED ⓘ |
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: 7 Subway Extension Description of subject: The 7 Subway Extension is a New York City transit project that extended the IRT Flushing Line (7 train) westward to serve the Hudson Yards redevelopment area on Manhattan’s Far West Side.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.