Triple

T8936342
Position Surface form Disambiguated ID Type / Status
Subject MBTA Green Line rolling stock E212786 entity
Predicate includesClass P1393 FINISHED
Object Type 9 Light Rail Vehicle E35647 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: Type 9 Light Rail Vehicle | Statement: [MBTA Green Line rolling stock, includesClass, Type 9 Light Rail Vehicle]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Type 9 Light Rail Vehicle
Context triple: [MBTA Green Line rolling stock, includesClass, Type 9 Light Rail Vehicle]
  • A. MBTA Type 9 Light Rail Vehicle chosen
    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.
  • B. Kinkisharyo light rail vehicles
    Kinkisharyo light rail vehicles are modern electric multiple-unit trains manufactured by the Japanese company Kinki Sharyo, widely used in North American light rail systems for urban passenger transit.
  • C. 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.
  • D. Siemens P2000 light rail vehicles
    Siemens P2000 light rail vehicles are a fleet of electric light rail cars built by Siemens for use on Los Angeles Metro Rail lines.
  • E. M9 electric multiple unit
    The M9 electric multiple unit is a modern commuter rail train used by the Long Island Rail Road, designed to replace older fleets with improved performance, safety, and passenger amenities.
  • 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_69ca839694c88190b324ffeb43d23b08 completed March 30, 2026, 2:07 p.m.
NER Named-entity recognition batch_69cc66928cec8190915636d663f843af completed April 1, 2026, 12:28 a.m.
NED1 Entity disambiguation (via context triple) batch_69cfd095a07c81908e164cfa68fb693e completed April 3, 2026, 2:37 p.m.
Created at: March 30, 2026, 6:58 p.m.