San Diego Trolley
E103770
The San Diego Trolley is a light rail transit system serving the San Diego metropolitan area, known for its multiple color-coded lines connecting downtown with surrounding communities and key regional destinations.
All labels observed (7)
| Label | Occurrences |
|---|---|
| San Diego Trolley canonical | 25 |
| San Diego Trolley Blue Line | 7 |
| San Diego Trolley Green Line | 4 |
| Blue Line (San Diego Trolley) | 1 |
| Green Line (San Diego Trolley) | 1 |
| San Diego Trolley system | 1 |
| San Diego Trolley, Inc. | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T712168 — 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 Diego Trolley Context triple: [Siemens S70, usedInSystem, San Diego Trolley]
-
A.
VTA light rail
VTA light rail is a light rail public transit system serving Santa Clara County, including cities such as San Jose, operated by the Santa Clara Valley Transportation Authority.
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B.
MAX Light Rail
MAX Light Rail is the metropolitan light rail transit system serving the Portland, Oregon, metropolitan area.
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C.
Los Angeles Metro Rail
Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
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D.
Santa Monica Big Blue Bus
Santa Monica Big Blue Bus is a public transit agency serving Santa Monica and surrounding areas in Los Angeles County with local and express bus services.
-
E.
DART Light Rail
DART Light Rail is a light rail transit system serving the Dallas–Fort Worth metropolitan area, operated by Dallas Area Rapid Transit.
- 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 Diego Trolley Target entity description: The San Diego Trolley is a light rail transit system serving the San Diego metropolitan area, known for its multiple color-coded lines connecting downtown with surrounding communities and key regional destinations.
-
A.
VTA light rail
VTA light rail is a light rail public transit system serving Santa Clara County, including cities such as San Jose, operated by the Santa Clara Valley Transportation Authority.
-
B.
MAX Light Rail
MAX Light Rail is the metropolitan light rail transit system serving the Portland, Oregon, metropolitan area.
-
C.
Los Angeles Metro Rail
Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
-
D.
Santa Monica Big Blue Bus
Santa Monica Big Blue Bus is a public transit agency serving Santa Monica and surrounding areas in Los Angeles County with local and express bus services.
-
E.
DART Light Rail
DART Light Rail is a light rail transit system serving the Dallas–Fort Worth metropolitan area, operated by Dallas Area Rapid Transit.
- F. None of above. chosen
Statements (48)
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 Diego Trolley Description of subject: The San Diego Trolley is a light rail transit system serving the San Diego metropolitan area, known for its multiple color-coded lines connecting downtown with surrounding communities and key regional destinations.
Referenced by (40)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
San Diego Trolley Blue Line
this entity surface form:
San Diego Trolley Green Line
subject surface form:
La Mesa, California
this entity surface form:
San Diego Trolley Blue Line
this entity surface form:
San Diego Trolley Green Line
subject surface form:
Chula Vista
this entity surface form:
San Diego Trolley Blue Line
this entity surface form:
San Diego Trolley system
this entity surface form:
San Diego Trolley Blue Line
this entity surface form:
San Diego Trolley Blue Line
this entity surface form:
San Diego Trolley Green Line
this entity surface form:
San Diego Trolley Green Line
this entity surface form:
San Diego Trolley Blue Line
this entity surface form:
San Diego Trolley Blue Line
this entity surface form:
San Diego Trolley, Inc.
subject surface form:
Siemens U2 LRV
subject surface form:
Siemens SD160
this entity surface form:
Green Line (San Diego Trolley)
this entity surface form:
Blue Line (San Diego Trolley)