San Francisco (Caltrain)
E522427
San Francisco (Caltrain) is the northern terminus and major commuter rail station of the Caltrain line serving the San Francisco Bay Area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| San Francisco (Caltrain) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5438367 — 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 Francisco (Caltrain) Context triple: [SFM, isAbbreviationFor, San Francisco (Caltrain)]
-
A.
Caltrain
Caltrain is a commuter rail service on the San Francisco Peninsula and in the Santa Clara Valley, connecting San Francisco to San Jose and Gilroy in California.
-
B.
San Carlos Caltrain station
San Carlos Caltrain station is a commuter rail station on the Caltrain line serving the city of San Carlos in San Mateo County, California.
-
C.
San Bruno Caltrain station
San Bruno Caltrain station is a commuter rail stop on Caltrain’s Peninsula corridor serving passengers in the city of San Bruno, south of San Francisco.
-
D.
Redwood City Station
Redwood City Station is a major Caltrain commuter rail stop in Redwood City, California, serving as a key transit hub along the San Francisco Peninsula.
-
E.
Belmont Caltrain station
Belmont Caltrain station is a commuter rail station in Belmont, California, providing Peninsula rail service on the Caltrain line between San Francisco and San Jose.
- 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 Francisco (Caltrain) Target entity description: San Francisco (Caltrain) is the northern terminus and major commuter rail station of the Caltrain line serving the San Francisco Bay Area.
-
A.
Caltrain
Caltrain is a commuter rail service on the San Francisco Peninsula and in the Santa Clara Valley, connecting San Francisco to San Jose and Gilroy in California.
-
B.
San Carlos Caltrain station
San Carlos Caltrain station is a commuter rail station on the Caltrain line serving the city of San Carlos in San Mateo County, California.
-
C.
San Bruno Caltrain station
San Bruno Caltrain station is a commuter rail stop on Caltrain’s Peninsula corridor serving passengers in the city of San Bruno, south of San Francisco.
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D.
Redwood City Station
Redwood City Station is a major Caltrain commuter rail stop in Redwood City, California, serving as a key transit hub along the San Francisco Peninsula.
-
E.
Belmont Caltrain station
Belmont Caltrain station is a commuter rail station in Belmont, California, providing Peninsula rail service on the Caltrain line between San Francisco and San Jose.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail station
ⓘ
railway terminus ⓘ |
| accessible | yes ⓘ |
| category |
Caltrain stations
ⓘ
Railway stations in San Francisco ⓘ |
| connectsTo |
Muni bus services
ⓘ
Muni light rail ⓘ
linked to:
Muni Metro
SamTrans bus services ⓘ local shuttles ⓘ |
| country | United States of America ⓘ |
| electrificationStatus | served by electrified Caltrain service ⓘ |
| fareSystem | Clipper ⓘ |
| fareZone | Zone 1 ⓘ |
| hasAdjacentStation | 22nd Street (Caltrain) ⓘ |
| hasAmenities |
bicycle parking
ⓘ
restrooms ⓘ seating areas ⓘ |
| hasBicycleFacilities | yes ⓘ |
| hasFormerFunction | terminal for diesel Caltrain service ⓘ |
| hasParking | yes ⓘ |
| hasPlatformType |
island platform
ⓘ
side platform ⓘ |
| hasSecurity |
CCTV surveillance
ⓘ
station staff presence ⓘ |
| hasService | commuter rail ⓘ |
| hasStationCode | SFM ⓘ |
| hasStructureType | at-grade station ⓘ |
| hasTicketing |
Clipper card readers
ⓘ
ticket machines ⓘ |
| hasTracks | multiple tracks ⓘ |
| hasWaitingArea | indoor waiting area ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
San Francisco ⓘ San Francisco Bay Area ⓘ |
| operatedBy | Caltrain ⓘ |
| ownedBy | Caltrain ⓘ |
| partOf |
Caltrain commuter rail network
ⓘ
linked to:
Caltrain
|
| positionOnLine | northern terminus ⓘ |
| railwayLine | Caltrain ⓘ |
| safetyFeatures |
level crossing protection
ⓘ
platform edge markings ⓘ |
| serves |
San Francisco
ⓘ
San Francisco Bay Area ⓘ |
| terminusFor | Caltrain ⓘ |
| usedFor |
commuter travel
ⓘ
regional rail travel ⓘ |
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 Francisco (Caltrain) Description of subject: San Francisco (Caltrain) is the northern terminus and major commuter rail station of the Caltrain line serving the San Francisco Bay Area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.