New York and Putnam Railroad
E228329
The New York and Putnam Railroad was a historic rail line in New York State that once connected New York City to communities in Westchester and Putnam counties before its route was later converted into recreational trails.
All labels observed (4)
| Label | Occurrences |
|---|---|
| New York Central Railroad Putnam Division | 2 |
| New York and Putnam Railroad canonical | 2 |
| Old Putnam rail corridor | 1 |
| former New York Central Putnam Division rail line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2059691 — 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: New York and Putnam Railroad Context triple: [North County Trailway, railroadPredecessor, New York and Putnam Railroad]
-
A.
New York and Harlem Railroad
The New York and Harlem Railroad was one of the earliest rail lines in New York State, forming a key part of the region’s 19th-century transportation network and later becoming a cornerstone of Cornelius Vanderbilt’s railroad empire.
-
B.
Hudson and Manhattan Railroad
The Hudson and Manhattan Railroad was an early 20th-century rapid transit system that operated tunnels and trains between Manhattan and New Jersey, forming the core of what is now the PATH system.
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C.
Lehigh and Hudson River Railway
The Lehigh and Hudson River Railway was a regional American railroad that operated in the northeastern United States, primarily serving as a bridge line connecting major trunk railroads before its assets were absorbed into Conrail in 1976.
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D.
Trenton Line
Trenton Line is a commuter rail service in the Philadelphia region operated by SEPTA Regional Rail, connecting Center City Philadelphia with Trenton, New Jersey.
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E.
Pelham Line
The Pelham Line is a New York City Subway route in the Bronx and Manhattan, operated by the IRT division and primarily served by the 6 train.
- 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: New York and Putnam Railroad Target entity description: The New York and Putnam Railroad was a historic rail line in New York State that once connected New York City to communities in Westchester and Putnam counties before its route was later converted into recreational trails.
-
A.
New York and Harlem Railroad
The New York and Harlem Railroad was one of the earliest rail lines in New York State, forming a key part of the region’s 19th-century transportation network and later becoming a cornerstone of Cornelius Vanderbilt’s railroad empire.
-
B.
Hudson and Manhattan Railroad
The Hudson and Manhattan Railroad was an early 20th-century rapid transit system that operated tunnels and trains between Manhattan and New Jersey, forming the core of what is now the PATH system.
-
C.
Lehigh and Hudson River Railway
The Lehigh and Hudson River Railway was a regional American railroad that operated in the northeastern United States, primarily serving as a bridge line connecting major trunk railroads before its assets were absorbed into Conrail in 1976.
-
D.
Trenton Line
Trenton Line is a commuter rail service in the Philadelphia region operated by SEPTA Regional Rail, connecting Center City Philadelphia with Trenton, New Jersey.
-
E.
Pelham Line
The Pelham Line is a New York City Subway route in the Bronx and Manhattan, operated by the IRT division and primarily served by the 6 train.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
defunct railroad line
ⓘ
railroad ⓘ |
| connected |
New York City
ⓘ
communities in Putnam County, New York ⓘ communities in Westchester County, New York ⓘ |
| conversionType | rail-to-trail conversion ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| historicalStatus | historic rail line ⓘ |
| laterUse |
rail trail
ⓘ
recreational trail ⓘ |
| locatedIn |
New York
ⓘ
surface form:
New York State
|
| northernAreaServed | Putnam County, New York ⓘ |
| originalInfrastructureType | railroad right-of-way ⓘ |
| partOf | regional rail network of New York State ⓘ |
| primaryFunction |
freight rail service
ⓘ
passenger rail service ⓘ |
| regionServed | Hudson Valley ⓘ |
| routeDirection | south–north ⓘ |
| servedCity | New York City ⓘ |
| servedCounty |
Putnam County, New York
ⓘ
Westchester County, New York ⓘ |
| southernTerminus | New York City ⓘ |
| state | New York ⓘ |
| status | defunct ⓘ |
| 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: New York and Putnam Railroad Description of subject: The New York and Putnam Railroad was a historic rail line in New York State that once connected New York City to communities in Westchester and Putnam counties before its route was later converted into recreational trails.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
New York Central Railroad Putnam Division
this entity surface form:
Old Putnam rail corridor
this entity surface form:
New York Central Railroad Putnam Division
this entity surface form:
former New York Central Putnam Division rail line