Triple

T18213414
Position Surface form Disambiguated ID Type / Status
Subject Green Line E branch E436089 entity
Predicate usesRollingStock P5426 FINISHED
Object Type 8 Light Rail Vehicle — NE NERFINISHED

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: Type 8 Light Rail Vehicle | Statement: [Green Line E branch, usesRollingStock, Type 8 Light Rail Vehicle]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Type 8 Light Rail Vehicle
Context triple: [Green Line E branch, usesRollingStock, Type 8 Light Rail Vehicle]
  • A. Type 10 Light Rail Vehicle
    The Type 10 Light Rail Vehicle is a next-generation, low-floor streetcar design planned to modernize and expand the MBTA Green Line fleet in Boston.
  • B. MBTA Type 8 Light Rail Vehicle chosen
    The MBTA Type 8 Light Rail Vehicle is a low-floor, articulated streetcar used on Boston’s Green Line, designed to improve accessibility and passenger capacity on the system’s light rail routes.
  • C. MBTA Type 9 Light Rail Vehicle
    The MBTA Type 9 Light Rail Vehicle is a modern, low-floor streetcar used on Boston’s Green Line that features improved accessibility, passenger comfort, and energy efficiency compared to earlier MBTA light rail fleets.
  • 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. 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.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 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_69d8b90dba6481908e119eb9aa4ca0cb completed April 10, 2026, 8:47 a.m.
NER Named-entity recognition batch_69e4e475953c81909f792793ded2057e completed April 19, 2026, 2:19 p.m.
Created at: April 10, 2026, 10:32 a.m.