San Francisco cable car system
E1416
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.
All labels observed (8)
How this entity was disambiguated
This entity first appeared as the object of triple T11902 — 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 Francisco cable car system Context triple: [San Francisco, hasTransportationSystem, San Francisco cable car system]
-
A.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
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B.
New York City Subway
The New York City Subway is one of the world’s largest and busiest rapid transit systems, serving the five boroughs of New York City with extensive 24/7 underground and elevated rail service.
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C.
Brooklyn Bridge
The Brooklyn Bridge is a historic 19th-century suspension bridge spanning the East River, renowned as an iconic symbol of New York City and a major connection between Manhattan and Brooklyn.
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D.
San Francisco
San Francisco is a major coastal city in Northern California known for its hilly landscape, iconic Golden Gate Bridge, and role as a historic center of technology and counterculture.
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E.
Union Station
Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
- 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 Francisco cable car system Target entity description: 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.
-
A.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
-
B.
New York City Subway
The New York City Subway is one of the world’s largest and busiest rapid transit systems, serving the five boroughs of New York City with extensive 24/7 underground and elevated rail service.
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C.
Brooklyn Bridge
The Brooklyn Bridge is a historic 19th-century suspension bridge spanning the East River, renowned as an iconic symbol of New York City and a major connection between Manhattan and Brooklyn.
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D.
San Francisco
San Francisco is a major coastal city in Northern California known for its hilly landscape, iconic Golden Gate Bridge, and role as a historic center of technology and counterculture.
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E.
Union Station
Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
cable car system
ⓘ
historic transportation system ⓘ public transit system ⓘ tourist attraction ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| designer | Andrew Smith Hallidie ⓘ |
| environment | urban ⓘ |
| fareSystem | flat fare ⓘ |
| gauge |
1067 mm
ⓘ
3 ft 6 in ⓘ |
| hasLine |
California Street line
ⓘ
Powell–Hyde line ⓘ Powell–Mason line ⓘ |
| hasVehicleType |
grip car
ⓘ
trailer car ⓘ |
| heritageDesignation | National Historic Landmark ⓘ |
| heritageDesignationDate | 1964 ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
San Francisco ⓘ |
| maintenanceFacility |
San Francisco cable car system
self-linksurface differs
ⓘ
surface form:
Washington-Mason cable car barn and powerhouse
|
| museumAt | San Francisco Cable Car Museum ⓘ |
| notableFor |
being the world’s last permanently operational cable car system
ⓘ
historic manually operated streetcars ⓘ steep routes ⓘ |
| notableStreetServed |
California Street
ⓘ
Hyde Street ⓘ Mason Street ⓘ Powell Street ⓘ |
| numberOfLines | 3 ⓘ |
| openedBy | Andrew Smith Hallidie ⓘ |
| openingDate | 1873-08-02 ⓘ |
| operator |
Muni
ⓘ
San Francisco cable car system self-linksurface differs ⓘ
surface form:
San Francisco Municipal Railway
|
| ownedBy |
San Francisco County
ⓘ
surface form:
City and County of San Francisco
|
| powerSource | central power house ⓘ |
| primaryUse | tourism ⓘ |
| propulsionSystem | cable-driven ⓘ |
| safetyFeature | manual brakes ⓘ |
| safetyIncidentHistory | has experienced accidents and safety concerns over time ⓘ |
| secondaryUse | local transportation ⓘ |
| status | operational ⓘ |
| symbolOf | San Francisco ⓘ |
| touristAreaServed |
Financial District
ⓘ
Fisherman’s Wharf ⓘ Union Square ⓘ |
| trackType | street-running ⓘ |
| traction | underground moving cable ⓘ |
| transitType | cable car ⓘ |
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 Francisco cable car system Description of subject: 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.
Referenced by (40)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
San Francisco cable cars
San Francisco cable car system
→
operator
→
San Francisco cable car system
self-linksurface differs
ⓘ
this entity surface form:
San Francisco Municipal Railway
San Francisco cable car system
→
maintenanceFacility
→
San Francisco cable car system
self-linksurface differs
ⓘ
this entity surface form:
Washington-Mason cable car barn and powerhouse
subject surface form:
F Market & Wharves
this entity surface form:
San Francisco cable cars
this entity surface form:
San Francisco cable car network
this entity surface form:
San Francisco cable car lines
this entity surface form:
San Francisco cable cars
this entity surface form:
San Francisco Cable Cars
this entity surface form:
San Francisco cable car network
this entity surface form:
San Francisco cable cars
this entity surface form:
San Francisco cable cars
this entity surface form:
San Francisco cable cars
this entity surface form:
San Francisco cable car
subject surface form:
Grip car 8
subject surface form:
Grip car 8
this entity surface form:
San Francisco cable car network
this entity surface form:
San Francisco cable cars
this entity surface form:
San Francisco Cable Cars
this entity surface form:
San Francisco cable cars
this entity surface form:
San Francisco cable cars