Triple

T664098
Position Surface form Disambiguated ID Type / Status
Subject BART E12820 entity
Predicate hasLine P35 FINISHED
Object Richmond–Millbrae line
The Richmond–Millbrae line is a Bay Area Rapid Transit (BART) service route in the San Francisco Bay Area that connects Richmond in the East Bay with Millbrae near San Francisco International Airport.
 E87165 NE FINISHED

How this triple was built (4 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: Richmond–Millbrae line | Statement: [BART, hasLine, Richmond–Millbrae line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Richmond–Millbrae line
Context triple: [BART, hasLine, Richmond–Millbrae line]
  • A. Atherton line
    The Atherton line is a suburban railway route in Greater Manchester, England, connecting Manchester with towns such as Swinton, Walkden, and Atherton.
  • B. Muni F-Market & Wharves line
    The Muni F-Market & Wharves line is a historic streetcar route in San Francisco that runs along Market Street and the Embarcadero, connecting downtown with popular waterfront destinations.
  • C. Metro B Line
    The Metro B Line is a heavy rail subway line in Los Angeles that runs through central and Hollywood areas as part of the LA Metro Rail system.
  • D. Metro C Line
    The Metro C Line is a light rail line in Los Angeles County that runs east–west, connecting Norwalk to Redondo Beach and serving key transit hubs including Los Angeles International Airport via shuttle.
  • E. Pink Line
    The Pink Line is a rapid transit route in Chicago's "L" system that runs between the Loop and the city's West Side neighborhoods.
  • 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: Richmond–Millbrae line
Triple: [BART, hasLine, Richmond–Millbrae line]
Generated description
The Richmond–Millbrae line is a Bay Area Rapid Transit (BART) service route in the San Francisco Bay Area that connects Richmond in the East Bay with Millbrae near San Francisco International Airport.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Richmond–Millbrae line
Target entity description: The Richmond–Millbrae line is a Bay Area Rapid Transit (BART) service route in the San Francisco Bay Area that connects Richmond in the East Bay with Millbrae near San Francisco International Airport.
  • A. Atherton line
    The Atherton line is a suburban railway route in Greater Manchester, England, connecting Manchester with towns such as Swinton, Walkden, and Atherton.
  • B. Muni F-Market & Wharves line
    The Muni F-Market & Wharves line is a historic streetcar route in San Francisco that runs along Market Street and the Embarcadero, connecting downtown with popular waterfront destinations.
  • C. Metro B Line
    The Metro B Line is a heavy rail subway line in Los Angeles that runs through central and Hollywood areas as part of the LA Metro Rail system.
  • D. Metro C Line
    The Metro C Line is a light rail line in Los Angeles County that runs east–west, connecting Norwalk to Redondo Beach and serving key transit hubs including Los Angeles International Airport via shuttle.
  • E. Pink Line
    The Pink Line is a rapid transit route in Chicago's "L" system that runs between the Loop and the city's West Side neighborhoods.
  • F. None of above. chosen

Provenance (5 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_69a493355dec819098d4244b2fa34885 completed March 1, 2026, 7:27 p.m.
NER Named-entity recognition batch_69a49fd1f0ec819087003d30bbab2fa6 completed March 1, 2026, 8:21 p.m.
NED1 Entity disambiguation (via context triple) batch_69a63747e47481909877b49507b67c2c completed March 3, 2026, 1:20 a.m.
NEDg Description generation batch_69a645cff2a481908aa0b0cfde78c929 completed March 3, 2026, 2:22 a.m.
NED2 Entity disambiguation (via description) batch_69a64656026c8190834af887720f3a0a completed March 3, 2026, 2:24 a.m.
Created at: March 1, 2026, 7:36 p.m.