Union Pacific Railroad Coast Subdivision

E428219

rail corridor railway line

The Union Pacific Railroad Coast Subdivision is a key rail corridor in California that carries both freight and commuter services, including trains operated by the Altamont Corridor Express.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (9)

Label	Occurrences
Union Pacific Coast Line	5
Union Pacific Coast Subdivision	2
Coast Line (Southern Pacific)	1
Coast Line (Union Pacific Railroad)	1
Union Pacific Coast Subdivision system	1
Union Pacific Railroad (segments)	1
Union Pacific Railroad Coast Line	1
Union Pacific Railroad Coast Subdivision canonical	1
Union Pacific Railroad network in California	1

How this entity was disambiguated

This entity first appeared as the object of triple T4235520 — 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: Union Pacific Railroad Coast Subdivision
Context triple: [Altamont Corridor Express, usesRailLine, Union Pacific Railroad Coast Subdivision]

A. Union Pacific Railroad Niles Subdivision
The Union Pacific Railroad Niles Subdivision is a freight and passenger rail corridor in California’s East Bay and Tri-Valley region that carries both Union Pacific trains and commuter services such as the Altamont Corridor Express.
B. Union Pacific West Line
The Union Pacific West Line is a commuter rail route in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, providing daily passenger service as part of the Metra system.
C. Union Pacific North Line
The Union Pacific North Line is a Metra commuter rail line in the Chicago metropolitan area that runs north from downtown Chicago through suburbs along Lake Michigan into Kenosha, Wisconsin.
D. Union Pacific Railroad Oakland Subdivision
The Union Pacific Railroad Oakland Subdivision is a key freight and passenger rail corridor in Northern California that connects the East Bay with the Central Valley and is used by services such as the Altamont Corridor Express.
E. Union Pacific Northwest Line
The Union Pacific Northwest Line is a commuter rail route serving Chicago and its northwestern suburbs as part of the Metra rail system.
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: Union Pacific Railroad Coast Subdivision
Target entity description: The Union Pacific Railroad Coast Subdivision is a key rail corridor in California that carries both freight and commuter services, including trains operated by the Altamont Corridor Express.

A. Union Pacific Railroad Niles Subdivision
The Union Pacific Railroad Niles Subdivision is a freight and passenger rail corridor in California’s East Bay and Tri-Valley region that carries both Union Pacific trains and commuter services such as the Altamont Corridor Express.
B. Union Pacific West Line
The Union Pacific West Line is a commuter rail route in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, providing daily passenger service as part of the Metra system.
C. Union Pacific North Line
The Union Pacific North Line is a Metra commuter rail line in the Chicago metropolitan area that runs north from downtown Chicago through suburbs along Lake Michigan into Kenosha, Wisconsin.
D. Union Pacific Railroad Oakland Subdivision
The Union Pacific Railroad Oakland Subdivision is a key freight and passenger rail corridor in Northern California that connects the East Bay with the Central Valley and is used by services such as the Altamont Corridor Express.
E. Union Pacific Northwest Line
The Union Pacific Northwest Line is a commuter rail route serving Chicago and its northwestern suburbs as part of the Metra rail system.
F. None of above. chosen

Statements (24)

Predicate	Object
instanceOf	rail corridor ⓘ railway line ⓘ
connectsWith	other Union Pacific subdivisions in California ⓘ
country	United States of America ⓘ
electrification	not electrified ⓘ
hasOwner	Union Pacific Corporation subsidiary Union Pacific Railroad ⓘ linked to: Union Pacific Railroad
hasRightOfWayType	shared freight and passenger ⓘ
hasTrackGauge	standard gauge ⓘ
infrastructureType	heavy rail ⓘ
locatedIn	California ⓘ linked to: California, United States Northern California ⓘ San Francisco Bay Area region ⓘ linked to: San Francisco Bay Area
operator	Union Pacific Railroad ⓘ
owner	Union Pacific Railroad ⓘ
partOf	Union Pacific Railroad network ⓘ linked to: Union Pacific Railroad
railSystem	North American freight rail network ⓘ
railTraffic	commuter trains ⓘ freight trains ⓘ
regulatingAuthority	Federal Railroad Administration ⓘ
serves	Altamont Corridor Express ⓘ
usedBy	Altamont Corridor Express commuter services ⓘ Union Pacific freight services ⓘ linked to: Union Pacific Railroad
usedFor	commuter rail transport ⓘ freight rail transport ⓘ

How these facts were elicited

Referenced by (14)

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

Altamont Corridor Express → usesRailLine → Union Pacific Railroad Coast Subdivision ⓘ

Union Pacific Valley Subdivision (segments) → partOfNetwork → Union Pacific Railroad network in California ⓘ