Altamont Corridor
E501727
The Altamont Corridor is a key rail and transportation route in Northern California that connects the Central Valley with the San Francisco Bay Area through the Altamont Pass.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Altamont Corridor canonical | 1 |
| Altamont Pass corridor | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5191119 — 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: Altamont Corridor Context triple: [Lathrop, transportationCorridor, Altamont Corridor]
-
A.
Banfield Freeway corridor
The Banfield Freeway corridor is a major transportation route in Portland, Oregon, carrying Interstate 84 and associated rail and transit lines through the city’s east side.
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B.
Golden State Freeway
The Golden State Freeway is a major segment of Interstate 5 in California, serving as a primary north–south transportation corridor through the Los Angeles area and the Central Valley.
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C.
Pasadena Freeway
The Pasadena Freeway, also known as State Route 110, is a historic Los Angeles-area freeway recognized as the first freeway in the western United States, connecting downtown Los Angeles to Pasadena.
-
D.
East Bay Expressway
The East Bay Expressway is a major roadway project in Gwadar, Pakistan, designed to connect the port area with national transport networks and support regional trade and development.
-
E.
South Mountain Freeway
South Mountain Freeway is a major segment of the Loop 202 beltway in the Phoenix, Arizona metropolitan area, designed to improve regional traffic flow and provide an alternative route around the city.
- 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: Altamont Corridor Target entity description: The Altamont Corridor is a key rail and transportation route in Northern California that connects the Central Valley with the San Francisco Bay Area through the Altamont Pass.
-
A.
Banfield Freeway corridor
The Banfield Freeway corridor is a major transportation route in Portland, Oregon, carrying Interstate 84 and associated rail and transit lines through the city’s east side.
-
B.
Golden State Freeway
The Golden State Freeway is a major segment of Interstate 5 in California, serving as a primary north–south transportation corridor through the Los Angeles area and the Central Valley.
-
C.
Pasadena Freeway
The Pasadena Freeway, also known as State Route 110, is a historic Los Angeles-area freeway recognized as the first freeway in the western United States, connecting downtown Los Angeles to Pasadena.
-
D.
East Bay Expressway
The East Bay Expressway is a major roadway project in Gwadar, Pakistan, designed to connect the port area with national transport networks and support regional trade and development.
-
E.
South Mountain Freeway
South Mountain Freeway is a major segment of the Loop 202 beltway in the Phoenix, Arizona metropolitan area, designed to improve regional traffic flow and provide an alternative route around the city.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
rail corridor
ⓘ
transportation corridor ⓘ |
| connects |
Central Valley
ⓘ
San Francisco Bay Area ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses | Diablo Range ⓘ |
| follows | historic transcontinental rail route ⓘ |
| hasBottleneck | Altamont Pass grade and curves ⓘ |
| hasProposedImprovement |
rail capacity upgrades
ⓘ
travel time reductions for interregional trips ⓘ |
| hasTopographicFeature | mountain pass ⓘ |
| hasTransportationMode |
rail
ⓘ
road (parallel highways and arterials) ⓘ |
| isSubjectOf | regional transportation planning in Northern California ⓘ |
| locatedIn | Northern California ⓘ |
| partOf | California rail network ⓘ |
| passesThrough | Altamont Pass ⓘ |
| regionServed |
East Bay
ⓘ
San Joaquin Valley ⓘ Tri-Valley ⓘ |
| strategicImportance |
freight gateway between Central Valley and Bay Area
ⓘ
key commuter route between Central Valley and Bay Area ⓘ |
| supports |
goods movement between ports and inland areas
ⓘ
interregional commuting ⓘ |
| traverses |
Alameda County
ⓘ
Contra Costa County ⓘ San Joaquin County ⓘ |
| usedFor |
freight rail transportation
ⓘ
passenger rail transportation ⓘ |
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: Altamont Corridor Description of subject: The Altamont Corridor is a key rail and transportation route in Northern California that connects the Central Valley with the San Francisco Bay Area through the Altamont Pass.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Altamont Corridor