Powell–Mason line
E6879
The Powell–Mason line is one of San Francisco’s historic cable car routes, running between downtown and the Fisherman’s Wharf area and serving as both public transit and a popular tourist attraction.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Powell–Mason line canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T70778 — 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: Powell–Mason line Context triple: [San Francisco cable car system, hasLine, Powell–Mason line]
-
A.
Powell–Hyde line
The Powell–Hyde line is one of San Francisco’s iconic cable car routes, running from downtown near Union Square over Nob Hill to the waterfront at Fisherman’s Wharf.
-
B.
Frick
Frick is a surname most prominently associated with American industrialist and art patron Henry Clay Frick.
-
C.
Front Court
Front Court is the historic main courtyard of Emmanuel College, Cambridge, forming the central architectural and social focus of the college.
-
D.
Column of Victory
The Column of Victory is a monumental stone column at Blenheim Palace in Oxfordshire, England, commemorating the military triumphs of John Churchill, 1st Duke of Marlborough.
-
E.
Excelsior
Excelsior is the Latin state motto of New York, meaning "ever upward" and symbolizing aspiration and continual progress.
- 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: Powell–Mason line Target entity description: The Powell–Mason line is one of San Francisco’s historic cable car routes, running between downtown and the Fisherman’s Wharf area and serving as both public transit and a popular tourist attraction.
-
A.
Powell–Hyde line
The Powell–Hyde line is one of San Francisco’s iconic cable car routes, running from downtown near Union Square over Nob Hill to the waterfront at Fisherman’s Wharf.
-
B.
Frick
Frick is a surname most prominently associated with American industrialist and art patron Henry Clay Frick.
-
C.
Front Court
Front Court is the historic main courtyard of Emmanuel College, Cambridge, forming the central architectural and social focus of the college.
-
D.
Column of Victory
The Column of Victory is a monumental stone column at Blenheim Palace in Oxfordshire, England, commemorating the military triumphs of John Churchill, 1st Duke of Marlborough.
-
E.
Excelsior
Excelsior is the Latin state motto of New York, meaning "ever upward" and symbolizing aspiration and continual progress.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
cable car line
ⓘ
public transport route ⓘ tourist attraction ⓘ |
| connects |
Fisherman’s Wharf
ⓘ
Union Square area ⓘ
linked to:
Union Square
|
| country | United States of America ⓘ |
| electrification | none ⓘ |
| fareSystem | San Francisco Muni fare system ⓘ |
| gauge | 3 ft 6 in ⓘ |
| heritageStatus | historic transit line ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
San Francisco ⓘ United States ⓘ
linked to:
United States of America
|
| notableNearbyAttraction |
Fisherman’s Wharf
ⓘ
North Beach neighborhood ⓘ
linked to:
North Beach
Union Square ⓘ |
| operatedBy |
San Francisco Municipal Railway
ⓘ
linked to:
San Francisco Muni
|
| owner |
City and County of San Francisco
ⓘ
linked to:
San Francisco County
|
| partOf | San Francisco cable car system ⓘ |
| primaryRiders |
local commuters
ⓘ
tourists ⓘ |
| propulsionSystem | cable haulage ⓘ |
| shortName | PM ⓘ |
| streetServed |
Mason Street
ⓘ
Powell Street ⓘ |
| system |
Muni Metro and bus network (connecting services)
ⓘ
linked to:
Muni bus network
|
| terminus |
Mason Street terminal
ⓘ
linked to:
Hyde Street terminal
Powell Street terminal ⓘ |
| terminusArea |
Fisherman’s Wharf area
ⓘ
linked to:
Fisherman’s Wharf
downtown San Francisco ⓘ
linked to:
Northeast San Francisco
|
| transitType | cable car ⓘ |
| usedFor |
public transit
ⓘ
tourism ⓘ |
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: Powell–Mason line Description of subject: The Powell–Mason line is one of San Francisco’s historic cable car routes, running between downtown and the Fisherman’s Wharf area and serving as both public transit and a popular tourist attraction.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.