Union City BART station
E314435
Union City BART station is a Bay Area Rapid Transit rail station in Union City, California, serving as a key public transit hub for commuters in the East Bay.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Union City BART station canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2939115 — 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: Union City BART station Context triple: [Union City, California, hasFacility, Union City BART station]
-
A.
Rockridge BART station
Rockridge BART station is an elevated rapid transit station in Oakland, California, serving the Rockridge neighborhood on the Bay Area Rapid Transit system.
-
B.
Lake Merritt BART station
Lake Merritt BART station is an underground Bay Area Rapid Transit station in Oakland, California, serving the Lake Merritt neighborhood and nearby civic and residential areas.
-
C.
Civic Center/UN Plaza BART station
Civic Center/UN Plaza BART station is a major underground Bay Area Rapid Transit and Muni Metro hub serving San Francisco’s Civic Center area near City Hall and the United Nations Plaza.
-
D.
MacArthur BART station
MacArthur BART station is a major Bay Area Rapid Transit hub in Oakland, California, serving as a key transfer point for multiple lines and regional commuters.
-
E.
BART Embarcadero Station
BART Embarcadero Station is a major underground transit hub in downtown San Francisco serving Bay Area Rapid Transit trains and connecting with Muni Metro light rail lines.
- 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: Union City BART station Target entity description: Union City BART station is a Bay Area Rapid Transit rail station in Union City, California, serving as a key public transit hub for commuters in the East Bay.
-
A.
Rockridge BART station
Rockridge BART station is an elevated rapid transit station in Oakland, California, serving the Rockridge neighborhood on the Bay Area Rapid Transit system.
-
B.
Lake Merritt BART station
Lake Merritt BART station is an underground Bay Area Rapid Transit station in Oakland, California, serving the Lake Merritt neighborhood and nearby civic and residential areas.
-
C.
Civic Center/UN Plaza BART station
Civic Center/UN Plaza BART station is a major underground Bay Area Rapid Transit and Muni Metro hub serving San Francisco’s Civic Center area near City Hall and the United Nations Plaza.
-
D.
MacArthur BART station
MacArthur BART station is a major Bay Area Rapid Transit hub in Oakland, California, serving as a key transfer point for multiple lines and regional commuters.
-
E.
BART Embarcadero Station
BART Embarcadero Station is a major underground transit hub in downtown San Francisco serving Bay Area Rapid Transit trains and connecting with Muni Metro light rail lines.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Bay Area Rapid Transit station
ⓘ
railway station ⓘ |
| accessible | yes ⓘ |
| adjacentStationOnLine |
Fremont station
ⓘ
South Hayward station ⓘ |
| bicycleFacilities | yes ⓘ |
| category |
BART stations in Alameda County, California
ⓘ
Railway stations in the United States opened in 1972 ⓘ |
| coordinates | 37.5903°N 122.0170°W ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | third rail ⓘ |
| fareZone | 3 ⓘ |
| hasAmenity |
bicycle lockers
ⓘ
bicycle racks ⓘ car parking lot ⓘ kiss-and-ride area ⓘ |
| hasConnection |
AC Transit
ⓘ
surface form:
AC Transit bus services
Union City Transit bus services ⓘ |
| hasFeature |
bus transfer area
ⓘ
elevator ⓘ escalator ⓘ paid area restrooms ⓘ park-and-ride lot ⓘ ticket vending machines ⓘ |
| hasStationCode | UC ⓘ |
| isPublicTransitHub | true ⓘ |
| locatedIn |
Alameda County
ⓘ
surface form:
Alameda County, California
California, United States ⓘ
surface form:
California
Union City, California ⓘ United States of America ⓘ
surface form:
United States
|
| locatedInRegion | East Bay ⓘ |
| numberOfPlatforms | 1 ⓘ |
| numberOfTracks | 2 ⓘ |
| openingDate | September 11, 1972 ⓘ |
| operator |
BART
ⓘ
surface form:
Bay Area Rapid Transit
|
| ownedBy |
BART
ⓘ
surface form:
Bay Area Rapid Transit
|
| parkingAvailable | yes ⓘ |
| partOf |
San Francisco Bay Area Rapid Transit District
ⓘ
surface form:
Bay Area Rapid Transit system
|
| platformType | island platform ⓘ |
| servedByLine |
BART Green Line
ⓘ
BART Orange Line ⓘ |
| serves | East Bay commuters ⓘ |
| servesMetropolitanArea | San Francisco Bay Area ⓘ |
| structureType | at-grade ⓘ |
| ticketingSystem | Clipper card ⓘ |
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: Union City BART station Description of subject: Union City BART station is a Bay Area Rapid Transit rail station in Union City, California, serving as a key public transit hub for commuters in the East Bay.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Union City, California