San Carlos station
E70842
San Carlos station is a commuter rail station in San Carlos, California, serving Caltrain passengers on the San Francisco Peninsula.
All labels observed (1)
| Label | Occurrences |
|---|---|
| San Carlos station canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T511320 — 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 Carlos station Context triple: [San Carlos, hasRailStation, San Carlos station]
-
A.
O’Higgins Station
O’Higgins Station is a Chilean Antarctic research base located on the Antarctic Peninsula, used primarily for scientific studies and maintaining Chile’s presence in the region.
-
B.
Palo Alto station
Palo Alto station is a major commuter rail stop in Palo Alto, California, serving as a key hub on the Caltrain line between San Francisco and San Jose.
-
C.
Riverside station
Riverside station is a major Massachusetts Bay Transportation Authority light rail station and park-and-ride hub located in Newton, Massachusetts.
-
D.
Ayer station
Ayer station is a commuter rail stop in Ayer, Massachusetts that serves as a local transit hub on the MBTA Fitchburg Line.
-
E.
Southeast station
Southeast station is a Metro-North Railroad commuter rail stop in the town of Southeast, New York, serving the Harlem Line.
- 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 Carlos station Target entity description: San Carlos station is a commuter rail station in San Carlos, California, serving Caltrain passengers on the San Francisco Peninsula.
-
A.
O’Higgins Station
O’Higgins Station is a Chilean Antarctic research base located on the Antarctic Peninsula, used primarily for scientific studies and maintaining Chile’s presence in the region.
-
B.
Palo Alto station
Palo Alto station is a major commuter rail stop in Palo Alto, California, serving as a key hub on the Caltrain line between San Francisco and San Jose.
-
C.
Riverside station
Riverside station is a major Massachusetts Bay Transportation Authority light rail station and park-and-ride hub located in Newton, Massachusetts.
-
D.
Ayer station
Ayer station is a commuter rail stop in Ayer, Massachusetts that serves as a local transit hub on the MBTA Fitchburg Line.
-
E.
Southeast station
Southeast station is a Metro-North Railroad commuter rail stop in the town of Southeast, New York, serving the Harlem Line.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
Caltrain station
ⓘ
commuter rail station ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| fareSystem | Caltrain fare zones ⓘ |
| hasBicycleFacilities | yes ⓘ |
| hasParking | yes ⓘ |
| hasService | commuter rail ⓘ |
| hasTicketMachines | yes ⓘ |
| hasWaitingRoom | yes ⓘ |
| isOnCorridor |
Peninsula Corridor
ⓘ
linked to:
Peninsula rail corridor
|
| locatedIn |
California
ⓘ
linked to:
California, United States
San Carlos, California ⓘ San Mateo County, California ⓘ United States ⓘ
linked to:
United States of America
|
| locatedOn | San Francisco Peninsula ⓘ |
| numberOfTracks | 2 ⓘ |
| operator | Caltrain ⓘ |
| owner | Caltrain ⓘ |
| partOf |
Caltrain commuter rail system
ⓘ
linked to:
Caltrain
|
| platformConfiguration | two side platforms ⓘ |
| publicTransportType | railway station ⓘ |
| railwayLine |
Caltrain line
ⓘ
linked to:
Caltrain
|
| serves | Caltrain ⓘ |
| servesCity | San Carlos, California ⓘ |
| structureType | at-grade ⓘ |
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 Carlos station Description of subject: San Carlos station is a commuter rail station in San Carlos, California, serving Caltrain passengers on the San Francisco Peninsula.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.