SamTrans
E8245
SamTrans is the public bus and paratransit agency serving San Mateo County and parts of the San Francisco Bay Area.
All labels observed (8)
| Label | Occurrences |
|---|---|
| SamTrans canonical | 33 |
| SamTrans bus service | 2 |
| SamTrans (bus facilities) | 1 |
| SamTrans at Millbrae station | 1 |
| SamTrans bus network | 1 |
| SamTrans bus services | 1 |
| SamTrans bus system | 1 |
| SamTrans paratransit (Redi-Wheels and RediCoast) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T76658 — 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: SamTrans Context triple: [Caltrain, connectsWith, SamTrans]
-
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 Francisco cable car system
The San Francisco cable car system is a historic manually operated streetcar network and iconic symbol of the city, known for its steep routes and status as the world’s last permanently operational cable car system.
-
C.
C-TRAN
C-TRAN is the public transit agency serving Clark County and the Vancouver, Washington area, providing bus and express services often coordinated with Portland’s TriMet system.
-
D.
Muni
Muni is San Francisco’s primary public transit agency, operating buses, light rail, historic streetcars, and the city’s iconic cable cars.
-
E.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
- 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: SamTrans Target entity description: SamTrans is the public bus and paratransit agency serving San Mateo County and parts of 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 Francisco cable car system
The San Francisco cable car system is a historic manually operated streetcar network and iconic symbol of the city, known for its steep routes and status as the world’s last permanently operational cable car system.
-
C.
C-TRAN
C-TRAN is the public transit agency serving Clark County and the Vancouver, Washington area, providing bus and express services often coordinated with Portland’s TriMet system.
-
D.
Muni
Muni is San Francisco’s primary public transit agency, operating buses, light rail, historic streetcars, and the city’s iconic cable cars.
-
E.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
bus operator
ⓘ
paratransit operator ⓘ public transit agency ⓘ |
| connectsWith |
AC Transit
ⓘ
BART ⓘ Caltrain ⓘ Muni ⓘ VTA ⓘ
linked to:
VTA light rail
|
| country |
United States
ⓘ
linked to:
United States of America
|
| fareSystem |
Clipper card accepted
ⓘ
zone-based fares ⓘ |
| fundingSource |
federal transit funds
ⓘ
local sales tax ⓘ state transportation funds ⓘ |
| governingBody | Board of Directors of the San Mateo County Transit District ⓘ |
| hasServiceBrand |
SamTrans express routes
ⓘ
SamTrans paratransit ⓘ |
| headquartersLocation | San Carlos, California ⓘ |
| industry | public transportation ⓘ |
| locatedInTheAdministrativeTerritorialEntity |
San Mateo County
ⓘ
linked to:
San Mateo County, California
|
| modeOfTransport |
bus
ⓘ
paratransit ⓘ |
| officialName | San Mateo County Transit District bus service ⓘ |
| operatesInTimeZone | Pacific Time Zone ⓘ |
| operatesRouteCategory |
El Camino Real trunk routes
ⓘ
coastal routes in San Mateo County ⓘ school-oriented routes ⓘ |
| operatesServiceType |
commuter bus service
ⓘ
express bus service ⓘ local bus service ⓘ paratransit service ⓘ |
| parentOrganization | San Mateo County Transit District ⓘ |
| primaryServiceArea | Peninsula region of the San Francisco Bay Area ⓘ |
| providesAccessibilityService |
ADA paratransit
ⓘ
wheelchair-accessible buses ⓘ |
| region |
California
ⓘ
linked to:
California, United States
|
| serves |
San Francisco Bay Area
ⓘ
San Mateo County ⓘ
linked to:
San Mateo County, California
parts of Palo Alto ⓘ parts of San Francisco ⓘ |
| serviceStatus | operational ⓘ |
| serviceType |
demand-responsive paratransit
ⓘ
fixed-route bus ⓘ |
| shortName | SamTrans ⓘ |
| usesTicketingSystem | Clipper card ⓘ |
| website | https://www.samtrans.com ⓘ |
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: SamTrans Description of subject: SamTrans is the public bus and paratransit agency serving San Mateo County and parts of the San Francisco Bay Area.
Referenced by (41)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: SamTrans
linked to: SamTrans
subject linked to:
Civic Center/UN Plaza BART station
linked to: SamTrans
linked to: SamTrans
subject linked to:
Civic Center Station
linked to: SamTrans
linked to: SamTrans
linked to: SamTrans
subject linked to:
Hillsdale Caltrain station
San Mateo County transportation system
→
hasParatransitService
→
SamTrans paratransit (Redi-Wheels and RediCoast)
ⓘ
linked to: SamTrans