Amtrak San Joaquins at Richmond station
E408797
Amtrak San Joaquins at Richmond station is a regional intercity passenger rail service stop in Richmond, California, providing connections between the San Joaquin Valley and the San Francisco Bay Area.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Amtrak San Joaquins (via nearby station) | 1 |
| Amtrak San Joaquins at Richmond station canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3999001 — 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: Amtrak San Joaquins at Richmond station Context triple: [Richmond–Millbrae line, interchangeWith, Amtrak San Joaquins at Richmond station]
-
A.
Amtrak Capitol Corridor at Richmond station
The Amtrak Capitol Corridor at Richmond station is a key intercity rail service stop in Richmond, California, providing regional passenger connections between the Bay Area and Sacramento Valley.
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B.
Amtrak Sacramento Valley Station
Amtrak Sacramento Valley Station is the main intercity passenger rail station in Sacramento, California, serving Amtrak trains and regional transit connections.
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C.
Madera Amtrak station
Madera Amtrak station is a passenger rail station in Madera, California, served by Amtrak’s San Joaquins route in the San Joaquin Valley.
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D.
Muni Metro at Embarcadero Station
Muni Metro at Embarcadero Station is a major San Francisco light rail hub located in the Financial District, serving multiple Muni Metro lines and connecting to regional transit services.
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E.
Richmond BART station
Richmond BART station is a major transit hub in Richmond, California, serving as the northern terminus of BART’s Richmond line and an intermodal connection point with Amtrak and local buses.
- 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: Amtrak San Joaquins at Richmond station Target entity description: Amtrak San Joaquins at Richmond station is a regional intercity passenger rail service stop in Richmond, California, providing connections between the San Joaquin Valley and the San Francisco Bay Area.
-
A.
Amtrak Capitol Corridor at Richmond station
The Amtrak Capitol Corridor at Richmond station is a key intercity rail service stop in Richmond, California, providing regional passenger connections between the Bay Area and Sacramento Valley.
-
B.
Amtrak Sacramento Valley Station
Amtrak Sacramento Valley Station is the main intercity passenger rail station in Sacramento, California, serving Amtrak trains and regional transit connections.
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C.
Madera Amtrak station
Madera Amtrak station is a passenger rail station in Madera, California, served by Amtrak’s San Joaquins route in the San Joaquin Valley.
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D.
Muni Metro at Embarcadero Station
Muni Metro at Embarcadero Station is a major San Francisco light rail hub located in the Financial District, serving multiple Muni Metro lines and connecting to regional transit services.
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E.
Richmond BART station
Richmond BART station is a major transit hub in Richmond, California, serving as the northern terminus of BART’s Richmond line and an intermodal connection point with Amtrak and local buses.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
intercity rail stop
ⓘ
railway station stop ⓘ |
| adjacentTo | Richmond BART station ⓘ |
| category |
Amtrak station in California
ⓘ
Railway station in Contra Costa County, California ⓘ |
| connectsRegion |
San Francisco Bay Area
ⓘ
San Joaquin Valley ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| electrification | non-electrified mainline ⓘ |
| fareSystem | Amtrak ticketing ⓘ |
| hasConnection |
Amtrak Capitol Corridor at Richmond station
ⓘ
Bay Area Rapid Transit Richmond station ⓘ
linked to:
Richmond BART station
|
| hasServiceFrequency | multiple daily San Joaquins trains ⓘ |
| locatedIn |
Contra Costa County, California
ⓘ
linked to:
Contra Costa County
Richmond, California ⓘ San Francisco Bay Area ⓘ |
| operatedBy | Amtrak ⓘ |
| partOfRoute |
San Joaquins Oakland–Bakersfield service
ⓘ
linked to:
San Joaquins route
San Joaquins Sacramento–Bakersfield service ⓘ
linked to:
San Joaquins (train)
|
| platformType | mainline rail platforms ⓘ |
| primaryFunction | passenger boarding and alighting ⓘ |
| providesAccessTo |
Oakland and San Francisco Bay Area via connecting transit
ⓘ
San Joaquin Valley cities via San Joaquins ⓘ |
| railGauge | standard gauge ⓘ |
| railLine |
BNSF Railway (San Joaquins route)
ⓘ
linked to:
BNSF Railway line
|
| servedBy | San Joaquins ⓘ |
| servesCity | Richmond, California ⓘ |
| servesRegion | East Bay ⓘ |
| serviceType | regional intercity passenger rail ⓘ |
| ticketingMode | reserved seating required on San Joaquins ⓘ |
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: Amtrak San Joaquins at Richmond station Description of subject: Amtrak San Joaquins at Richmond station is a regional intercity passenger rail service stop in Richmond, California, providing connections between the San Joaquin Valley and the San Francisco Bay Area.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Amtrak San Joaquins at Richmond station