UP Martinez Subdivision
E1314047
UNEXPLORED
The UP Martinez Subdivision is a Union Pacific Railroad main line in Northern California that carries significant passenger and freight traffic, including Amtrak services through Martinez.
All labels observed (1)
| Label | Occurrences |
|---|---|
| UP Martinez Subdivision canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T18242808 — 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: UP Martinez Subdivision Context triple: [Martinez Amtrak station, railLine, UP Martinez Subdivision]
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A.
Hudson Subdivision
The Hudson Subdivision is a key railroad line in New York State that carries passenger and freight trains along the Hudson River corridor, including service through Albany–Rensselaer station.
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B.
Weston Subdivision
Weston Subdivision is a key railway corridor in the Greater Toronto Area used by GO Transit and other operators for commuter and freight rail services.
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C.
Carman Subdivision
Carman Subdivision is a railway line in New York State that serves as a key freight route and connector within the regional rail network.
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D.
Roxbury Subdivision
Roxbury Subdivision is a rail line operated by the New England Central Railroad, forming part of its regional freight rail network in New England.
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E.
San Luis Obispo Subdivision
The San Luis Obispo Subdivision is a railroad line segment in California that forms part of the Union Pacific (formerly Southern Pacific) Coast Line, serving the San Luis Obispo area and surrounding region.
- 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: UP Martinez Subdivision Target entity description: The UP Martinez Subdivision is a Union Pacific Railroad main line in Northern California that carries significant passenger and freight traffic, including Amtrak services through Martinez.
-
A.
Hudson Subdivision
The Hudson Subdivision is a key railroad line in New York State that carries passenger and freight trains along the Hudson River corridor, including service through Albany–Rensselaer station.
-
B.
Weston Subdivision
Weston Subdivision is a key railway corridor in the Greater Toronto Area used by GO Transit and other operators for commuter and freight rail services.
-
C.
Carman Subdivision
Carman Subdivision is a railway line in New York State that serves as a key freight route and connector within the regional rail network.
-
D.
Roxbury Subdivision
Roxbury Subdivision is a rail line operated by the New England Central Railroad, forming part of its regional freight rail network in New England.
-
E.
San Luis Obispo Subdivision
The San Luis Obispo Subdivision is a railroad line segment in California that forms part of the Union Pacific (formerly Southern Pacific) Coast Line, serving the San Luis Obispo area and surrounding region.
- F. None of above. chosen
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.