Blue Line (San Diego Trolley)

E1481138 UNEXPLORED

The Blue Line (San Diego Trolley) is a light rail service in the San Diego Trolley system that runs primarily along the South Bay corridor, linking the U.S.–Mexico border at San Ysidro with downtown San Diego and points north.

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All labels observed (2)

Label	Occurrences
San Diego Trolley Blue Line	6
Blue Line (San Diego Trolley) canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T21344491 — 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: Blue Line (San Diego Trolley)
Context triple: [Orange Line (San Diego Trolley), connectsWith, Blue Line (San Diego Trolley)]

A. Orange Line (San Diego Trolley)
The Orange Line is a light rail service of the San Diego Trolley system that runs east–west through central and eastern San Diego County, connecting downtown San Diego with communities such as Lemon Grove, La Mesa, and El Cajon.
B. San Diego Trolley
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.
C. Blue Line (Sacramento RT)
The Blue Line (Sacramento RT) is a light rail line in Sacramento, California, running north–south and connecting key destinations including downtown Sacramento and Cosumnes River College.
D. B Line (Los Angeles Metro)
The B Line is a heavy-rail rapid transit line in the Los Angeles Metro system that runs primarily underground, connecting North Hollywood to downtown Los Angeles.
E. G Line (Los Angeles Metro)
The G Line (Los Angeles Metro) is a bus rapid transit route in Los Angeles’ San Fernando Valley that runs primarily along dedicated busways, providing high-frequency east–west service.
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: Blue Line (San Diego Trolley)
Target entity description: The Blue Line (San Diego Trolley) is a light rail service in the San Diego Trolley system that runs primarily along the South Bay corridor, linking the U.S.–Mexico border at San Ysidro with downtown San Diego and points north.

A. Orange Line (San Diego Trolley)
The Orange Line is a light rail service of the San Diego Trolley system that runs east–west through central and eastern San Diego County, connecting downtown San Diego with communities such as Lemon Grove, La Mesa, and El Cajon.
B. San Diego Trolley
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.
C. Blue Line (Sacramento RT)
The Blue Line (Sacramento RT) is a light rail line in Sacramento, California, running north–south and connecting key destinations including downtown Sacramento and Cosumnes River College.
D. B Line (Los Angeles Metro)
The B Line is a heavy-rail rapid transit line in the Los Angeles Metro system that runs primarily underground, connecting North Hollywood to downtown Los Angeles.
E. G Line (Los Angeles Metro)
The G Line (Los Angeles Metro) is a bus rapid transit route in Los Angeles’ San Fernando Valley that runs primarily along dedicated busways, providing high-frequency east–west service.
F. None of above. chosen

Referenced by (7)

Full triples — surface form annotated when it differs from this entity's canonical label.

Orange Line (San Diego Trolley) → connectsWith → Blue Line (San Diego Trolley) ⓘ

subject linked to: Orange Line

Santa Fe Depot → connectsTo → San Diego Trolley Blue Line ⓘ