Caltrain Zone 4
E947418
Caltrain Zone 4 is one of the fare zones in the Caltrain commuter rail system used to determine ticket prices for travel to and from stations such as Santa Clara.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Caltrain Zone 4 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11808928 — 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 4 Context triple: [Santa Clara Station, fareZone, Caltrain Zone 4]
-
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.
Caltrain Zone 2
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.
-
C.
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.
-
D.
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.
-
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: Caltrain Zone 4 Target entity description: Caltrain Zone 4 is one of the fare zones in the Caltrain commuter rail system used to determine ticket prices for travel to and from stations such as Santa Clara.
-
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.
Caltrain Zone 2
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.
-
C.
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.
-
D.
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.
-
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 (29)
| Predicate | Object |
|---|---|
| instanceOf |
Caltrain fare zone
ⓘ
fare zone ⓘ |
| appliesTo | Caltrain commuter rail services NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| fareDependsOn |
destination zone
ⓘ
origin zone ⓘ |
| fareMedium |
Clipper card
NERFINISHED
ⓘ
mobile ticketing (Caltrain app) ⓘ paper tickets ⓘ |
| farePolicy | set by Caltrain Board or managing agency ⓘ |
| fareStructureType | zone-based ⓘ |
| hasFareRule | fare depends on number of zones traveled ⓘ |
| hasStation | Santa Clara station NERFINISHED ⓘ |
| hasZoneNumber | 4 ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
San Francisco Bay Area ⓘ |
| operator | Caltrain NERFINISHED ⓘ |
| partOf |
Caltrain
NERFINISHED
ⓘ
Caltrain fare system ⓘ |
| railSystem | Caltrain commuter rail system NERFINISHED ⓘ |
| relevantFor |
distance-based fare calculation
ⓘ
pass pricing ⓘ |
| usedBy | Caltrain passengers ⓘ |
| usedFor |
determining Caltrain fares
ⓘ
determining Caltrain ticket prices ⓘ |
| usedIn |
Clipper card fare calculation
ⓘ
day passes ⓘ monthly passes ⓘ single-ride tickets ⓘ |
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 4 Description of subject: Caltrain Zone 4 is one of the fare zones in the Caltrain commuter rail system used to determine ticket prices for travel to and from stations such as Santa Clara.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.