Triple

T16194662
Position Surface form Disambiguated ID Type / Status
Subject BART Silicon Valley extension E393030 entity
Predicate usesRollingStock P5426 FINISHED
Object BART electric multiple units E12820 NE FINISHED

How this triple was built (2 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: BART electric multiple units | Statement: [BART Silicon Valley extension, usesRollingStock, BART electric multiple units]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: BART electric multiple units
Context triple: [BART Silicon Valley extension, usesRollingStock, BART electric multiple units]
  • A. Muni Metro Breda LRV
    The Muni Metro Breda LRV is a type of light rail vehicle used by San Francisco’s Muni Metro system for its modern streetcar and light rail services.
  • B. Tri-Rail rolling stock
    Tri-Rail rolling stock consists of the passenger railcars and locomotives used to operate South Florida’s Tri-Rail commuter rail service.
  • C. Mark VI monorail trains
    Mark VI monorail trains are a fleet of streamlined, automated monorail vehicles introduced in the late 1980s that serve as the primary passenger trains for the Walt Disney World Resort’s elevated transit system.
  • D. RTA light rail vehicles
    RTA light rail vehicles are electric passenger trains operated by Cleveland's Regional Transit Authority for its light rail services, including the Waterfront Line.
  • E. BART chosen
    BART (Bay Area Rapid Transit) is a major rapid transit system serving the San Francisco Bay Area, linking cities like San Francisco, Oakland, and Berkeley with surrounding suburbs and regional transit networks.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69d87f1e49ac8190a311b54d32990576 completed April 10, 2026, 4:39 a.m.
NER Named-entity recognition batch_69e222d851188190b2452d165e4fc4bd completed April 17, 2026, 12:08 p.m.
NED1 Entity disambiguation (via context triple) batch_69ffff0bfd08819083afc4bea1b99aad completed May 10, 2026, 3:44 a.m.
Created at: April 10, 2026, 5:02 a.m.