Caltrain Zone 2
E895421
Caltrain Zone 2 is a fare zone in the Caltrain commuter rail system covering a segment of the San Francisco Peninsula that includes stations such as Hillsdale.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Caltrain Zone 2 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T10942415 — 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: Caltrain Zone 2 Context triple: [Hillsdale station, fareZone, Caltrain Zone 2]
-
A.
Caltrain Zone 6
Caltrain Zone 6 is the southernmost fare zone in the Caltrain commuter rail system, covering the Gilroy area in Santa Clara County, California.
-
B.
BART Transbay Zone 1
BART Transbay Zone 1 is a core fare zone in the Bay Area Rapid Transit system that covers central transbay stations in the San Francisco financial district and nearby areas.
-
C.
Metrolink Zone 3
Metrolink Zone 3 is a designated fare zone within Southern California’s Metrolink commuter rail system used to determine ticket prices for trips that include stations such as San Clemente Pier.
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D.
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.
-
E.
San Francisco (Caltrain)
San Francisco (Caltrain) is the northern terminus and major commuter rail station of the Caltrain line serving the San Francisco Bay Area.
- 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: Caltrain Zone 2 Target entity description: Caltrain Zone 2 is a fare zone in the Caltrain commuter rail system covering a segment of the San Francisco Peninsula that includes stations such as Hillsdale.
-
A.
Caltrain Zone 6
Caltrain Zone 6 is the southernmost fare zone in the Caltrain commuter rail system, covering the Gilroy area in Santa Clara County, California.
-
B.
BART Transbay Zone 1
BART Transbay Zone 1 is a core fare zone in the Bay Area Rapid Transit system that covers central transbay stations in the San Francisco financial district and nearby areas.
-
C.
Metrolink Zone 3
Metrolink Zone 3 is a designated fare zone within Southern California’s Metrolink commuter rail system used to determine ticket prices for trips that include stations such as San Clemente Pier.
-
D.
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.
-
E.
San Francisco (Caltrain)
San Francisco (Caltrain) is the northern terminus and major commuter rail station of the Caltrain line serving the San Francisco Bay Area.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
Caltrain fare zone
ⓘ
fare zone ⓘ |
| adjacentZone |
Caltrain Zone 1
NERFINISHED
ⓘ
Caltrain Zone 3 NERFINISHED ⓘ |
| appliesTo | Caltrain commuter rail system NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| farePolicy | fares depend on number of zones traveled ⓘ |
| fareStructure | higher fare for trips crossing more zones ⓘ |
| fareSystemType | zone-based fare system ⓘ |
| includesStation |
Belmont station
NERFINISHED
ⓘ
Broadway station (Caltrain) NERFINISHED ⓘ Burlingame station NERFINISHED ⓘ Hayward Park station NERFINISHED ⓘ Hillsdale station NERFINISHED ⓘ Millbrae station (Caltrain) NERFINISHED ⓘ Redwood City station NERFINISHED ⓘ San Carlos station NERFINISHED ⓘ San Mateo station NERFINISHED ⓘ |
| locatedIn | San Francisco Peninsula NERFINISHED ⓘ |
| operatorType | commuter rail ⓘ |
| partOf | Caltrain NERFINISHED ⓘ |
| railCorridor | San Francisco–San Jose rail corridor NERFINISHED ⓘ |
| railLine | Caltrain main line NERFINISHED ⓘ |
| railOperator | Caltrain NERFINISHED ⓘ |
| servesRegion | San Mateo County NERFINISHED ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| ticketMedia |
Caltrain mobile ticket
ⓘ
Caltrain paper ticket ⓘ Clipper card NERFINISHED ⓘ |
| usedFor |
fare calculation
ⓘ
ticket pricing ⓘ |
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: Caltrain Zone 2 Description of subject: Caltrain Zone 2 is a fare zone in the Caltrain commuter rail system covering a segment of the San Francisco Peninsula that includes stations such as Hillsdale.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.