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.