Market Street surface tracks
E38242
Market Street surface tracks are the street-level light rail tracks along San Francisco’s Market Street used by historic streetcars and other Muni rail services.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Market Street surface tracks canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T297956 — 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: Market Street surface tracks Context triple: [F Market & Wharves, operatesOn, Market Street surface tracks]
-
A.
California Street line
The California Street line is one of San Francisco’s historic cable car routes, running east–west across the city’s California Street and offering classic views of its steep hills and downtown skyline.
-
B.
Market Street retail area
Market Street retail area is a major pedestrianized shopping thoroughfare in Manchester city centre, known for its high street stores and heavy footfall.
-
C.
Market Street
Market Street is a major east–west thoroughfare in Philadelphia known for its commercial activity, transit connections, and role as a central artery of the city.
-
D.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
-
E.
Valley Lines
Valley Lines is a suburban rail network serving Cardiff and the surrounding South Wales Valleys.
- 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: Market Street surface tracks Target entity description: Market Street surface tracks are the street-level light rail tracks along San Francisco’s Market Street used by historic streetcars and other Muni rail services.
-
A.
California Street line
The California Street line is one of San Francisco’s historic cable car routes, running east–west across the city’s California Street and offering classic views of its steep hills and downtown skyline.
-
B.
Market Street retail area
Market Street retail area is a major pedestrianized shopping thoroughfare in Manchester city centre, known for its high street stores and heavy footfall.
-
C.
Market Street
Market Street is a major east–west thoroughfare in Philadelphia known for its commercial activity, transit connections, and role as a central artery of the city.
-
D.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
-
E.
Valley Lines
Valley Lines is a suburban rail network serving Cardiff and the surrounding South Wales Valleys.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
light rail infrastructure
ⓘ
public transport infrastructure ⓘ streetcar tracks ⓘ |
| cityServed | San Francisco ⓘ |
| connects |
Castro District
ⓘ
Downtown San Francisco ⓘ Ferry Building area via F line ⓘ |
| electrification | overhead lines ⓘ |
| formsCorridorWith |
Market Street bus routes
ⓘ
Market Street trolleybus routes ⓘ |
| hasMode |
light rail
ⓘ
streetcar ⓘ |
| hasParallelInfrastructure | Market Street subway ⓘ |
| hasService |
historic tramcars from various cities
ⓘ
surface-running light rail vehicles ⓘ vintage PCC streetcars ⓘ |
| isOn | street level ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Market Street ⓘ San Francisco ⓘ United States ⓘ
linked to:
United States of America
|
| openedForCurrentUse | 1990s ⓘ |
| operatedBy | San Francisco Municipal Transportation Agency ⓘ |
| ownedBy |
City and County of San Francisco
ⓘ
linked to:
San Francisco County
|
| partOf |
San Francisco Muni light rail network
ⓘ
linked to:
San Francisco Muni
San Francisco public transportation system ⓘ |
| primaryFunction | surface rail transit along Market Street ⓘ |
| regionServed | San Francisco Bay Area ⓘ |
| runsAlong |
Market Street corridor
ⓘ
linked to:
Market Street
|
| safetySystem | street-running mixed-traffic operations in some segments ⓘ |
| serves |
Embarcadero vicinity via connecting services
ⓘ
downtown San Francisco ⓘ
linked to:
Downtown San Francisco
|
| trackType | standard gauge ⓘ |
| usedBy |
F Market & Wharves line
ⓘ
linked to:
F Market & Wharves
Muni Metro ⓘ
linked to:
San Francisco Muni
San Francisco Municipal Railway ⓘ
linked to:
San Francisco Muni
heritage streetcars ⓘ historic streetcars ⓘ |
| usedFor |
local transit service
ⓘ
tourist-oriented heritage service ⓘ |
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: Market Street surface tracks Description of subject: Market Street surface tracks are the street-level light rail tracks along San Francisco’s Market Street used by historic streetcars and other Muni rail services.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
historic streetcar F-line