San Joaquin Regional Rail Commission
E59414
The San Joaquin Regional Rail Commission is a public agency in California responsible for planning, managing, and overseeing regional passenger rail services in the San Joaquin Valley and surrounding areas.
All labels observed (3)
| Label | Occurrences |
|---|---|
| San Joaquin Regional Rail Commission canonical | 4 |
| California passenger rail joint powers authorities | 1 |
| San Joaquin Joint Powers Authority | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T458811 — 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: San Joaquin Regional Rail Commission Context triple: [Altamont Corridor Express, operator, San Joaquin Regional Rail Commission]
-
A.
Sacramento Southern Railroad
The Sacramento Southern Railroad is a heritage railway in Sacramento, California, offering excursion train rides along the Sacramento River as part of the California State Railroad Museum’s operations.
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B.
Santa Clara Valley Transportation Authority
The Santa Clara Valley Transportation Authority is the public transit agency that operates bus, light rail, and related transportation services throughout Santa Clara County in California’s Silicon Valley.
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C.
Peninsula Corridor Joint Powers Board
The Peninsula Corridor Joint Powers Board is a public agency formed by Bay Area counties to oversee and manage the Caltrain commuter rail service along the San Francisco Peninsula.
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D.
San Mateo County Transit District
San Mateo County Transit District is the public agency that oversees and manages bus and other transit services in San Mateo County, California.
-
E.
San Francisco Muni
San Francisco Muni is the primary public transportation system in San Francisco, operating the city’s network of buses, light rail, historic streetcars, and cable cars.
- 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: San Joaquin Regional Rail Commission Target entity description: The San Joaquin Regional Rail Commission is a public agency in California responsible for planning, managing, and overseeing regional passenger rail services in the San Joaquin Valley and surrounding areas.
-
A.
Sacramento Southern Railroad
The Sacramento Southern Railroad is a heritage railway in Sacramento, California, offering excursion train rides along the Sacramento River as part of the California State Railroad Museum’s operations.
-
B.
Santa Clara Valley Transportation Authority
The Santa Clara Valley Transportation Authority is the public transit agency that operates bus, light rail, and related transportation services throughout Santa Clara County in California’s Silicon Valley.
-
C.
Peninsula Corridor Joint Powers Board
The Peninsula Corridor Joint Powers Board is a public agency formed by Bay Area counties to oversee and manage the Caltrain commuter rail service along the San Francisco Peninsula.
-
D.
San Mateo County Transit District
San Mateo County Transit District is the public agency that oversees and manages bus and other transit services in San Mateo County, California.
-
E.
San Francisco Muni
San Francisco Muni is the primary public transportation system in San Francisco, operating the city’s network of buses, light rail, historic streetcars, and cable cars.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
public agency
ⓘ
rail transportation authority ⓘ |
| basedIn |
Central Valley
ⓘ
surface form:
Central Valley of California
|
| collaboratesWith |
Caltrans
ⓘ
surface form:
California Department of Transportation
local transit agencies in Northern California ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| focusesOn |
air quality improvement through rail transit
ⓘ
regional mobility improvement ⓘ traffic congestion relief ⓘ |
| fundingSource |
federal transportation funds
ⓘ
local government funds ⓘ state government funds ⓘ |
| governingBody | Board of Commissioners ⓘ |
| hasRole |
rail service manager
ⓘ
rail service overseer ⓘ rail service planner ⓘ |
| hasWebsite | https://www.sjrrc.com/ ⓘ |
| headquartersLocation |
Stockton
ⓘ
surface form:
Stockton, California
|
| industry |
public transportation
ⓘ
rail transport ⓘ |
| jurisdiction |
Alameda County
ⓘ
Contra Costa County ⓘ Merced County ⓘ San Joaquin County ⓘ Santa Clara County ⓘ Stanislaus County ⓘ |
| legalForm | joint powers authority ⓘ |
| locatedInTheAdministrativeTerritorialEntity | San Joaquin County ⓘ |
| modeOfTransport | passenger rail ⓘ |
| operates | Altamont Corridor Express ⓘ |
| oversees | Altamont Corridor Express operations ⓘ |
| purpose |
managing regional passenger rail services
ⓘ
overseeing regional passenger rail services ⓘ planning regional passenger rail services ⓘ |
| regionServed |
Northern California
ⓘ
San Joaquin Valley ⓘ |
| responsibleFor |
rail capital projects in its service area
ⓘ
rail operations management for ACE ⓘ rail service planning in the San Joaquin Valley ⓘ |
| serviceArea | San Joaquin Valley and surrounding areas ⓘ |
| serviceType |
commuter rail
ⓘ
regional rail ⓘ |
| shortName | SJRRC ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| transportationModeManaged | diesel commuter rail ⓘ |
| transportationSector | intercity and commuter 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: San Joaquin Regional Rail Commission Description of subject: The San Joaquin Regional Rail Commission is a public agency in California responsible for planning, managing, and overseeing regional passenger rail services in the San Joaquin Valley and surrounding areas.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Altamont Corridor Express
this entity surface form:
San Joaquin Joint Powers Authority
subject surface form:
Board of Commissioners (San Joaquin Regional Rail Commission)
this entity surface form:
California passenger rail joint powers authorities