Triple
T70788
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | San Francisco cable car system |
E1416
|
entity |
| Predicate | maintenanceFacility |
P105
|
FINISHED |
| Object |
Washington-Mason cable car barn and powerhouse
The Washington-Mason cable car barn and powerhouse is the central facility in San Francisco that houses, powers, and maintains the city’s historic cable car system.
|
E1416
|
NE FINISHED |
How this triple was built (5 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Washington-Mason cable car barn and powerhouse | Statement: [San Francisco cable car system, maintenanceFacility, Washington-Mason cable car barn and powerhouse]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Washington-Mason cable car barn and powerhouse Context triple: [San Francisco cable car system, maintenanceFacility, Washington-Mason cable car barn and powerhouse]
-
A.
San Francisco cable car system
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.
-
B.
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.
-
C.
14th Street Bridge complex
The 14th Street Bridge complex is a group of highway and railway bridges over the Potomac River that serves as a major transportation link between Northern Virginia and Washington, D.C.
-
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.
Newton City Hall
Newton City Hall is the main municipal government building and administrative center for the city of Newton, Massachusetts.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Washington-Mason cable car barn and powerhouse Triple: [San Francisco cable car system, maintenanceFacility, Washington-Mason cable car barn and powerhouse]
Generated description
The Washington-Mason cable car barn and powerhouse is the central facility in San Francisco that houses, powers, and maintains the city’s historic cable car system.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Washington-Mason cable car barn and powerhouse Target entity description: The Washington-Mason cable car barn and powerhouse is the central facility in San Francisco that houses, powers, and maintains the city’s historic cable car system.
-
A.
San Francisco cable car system
chosen
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.
-
B.
California State Railroad Museum
The California State Railroad Museum is a major railway history museum in Sacramento showcasing historic locomotives, rolling stock, and exhibits on the development of railroads in California and the American West.
-
C.
Smithsonian Institution Building
The Smithsonian Institution Building, often called "The Castle," is a distinctive red sandstone landmark on the National Mall that serves as the historic headquarters and visitor center of the Smithsonian Institution.
-
D.
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.
-
E.
14th Street Bridge complex
The 14th Street Bridge complex is a group of highway and railway bridges over the Potomac River that serves as a major transportation link between Northern Virginia and Washington, D.C.
- F. None of above.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: maintenanceFacility Context triple: [San Francisco cable car system, maintenanceFacility, Washington-Mason cable car barn and powerhouse]
-
A.
maintenance
Indicates that an entity performs, requires, or is involved in upkeep, repair, or preservation activities for another entity or system.
-
B.
plannedFacility
Indicates that a facility is intended or scheduled to be built, established, or implemented in the future but does not yet exist or operate.
-
C.
sportsFacility
Indicates that one entity is a sports facility where sports or physical activities can take place for the other entity.
-
D.
hasNotableFacility
chosen
Indicates that an entity possesses or hosts a facility that is of particular significance, prominence, or interest.
-
E.
hasFacilityType
Indicates that an entity possesses or is associated with a specific type or category of facility.
- F. None of above.
Provenance (6 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69a24c06b3bc8190aa4ac89026115efc |
completed | Feb. 28, 2026, 1:59 a.m. |
| NER | Named-entity recognition | batch_69a24fd16c248190a6ee4cd96c388772 |
completed | Feb. 28, 2026, 2:15 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a2554ffb8c8190a30aceecd7f30d96 |
completed | Feb. 28, 2026, 2:39 a.m. |
| NEDg | Description generation | batch_69a25943cba88190a78f708d453ce968 |
completed | Feb. 28, 2026, 2:56 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a259c2706c8190b5319c004e207c29 |
completed | Feb. 28, 2026, 2:58 a.m. |
| PD | Predicate disambiguation | batch_69a24eaa0df88190add55579b2b9fd02 |
completed | Feb. 28, 2026, 2:10 a.m. |
Created at: Feb. 28, 2026, 2:03 a.m.