Triple

T7439637
Position Surface form Disambiguated ID Type / Status
Subject Amtrak Keystone Service E171711 entity
Predicate rollingStock P1305 FINISHED
Object Amfleet coaches E217133 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: Amfleet coaches | Statement: [Amtrak Keystone Service, rollingStock, Amfleet coaches]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Amfleet coaches
Context triple: [Amtrak Keystone Service, rollingStock, Amfleet coaches]
  • A. Amfleet I coaches
    Amfleet I coaches are single-level, tubular stainless-steel passenger railcars built by Budd in the 1970s for Amtrak’s short- to medium-distance corridor services, especially in the Northeastern United States.
  • B. Amfleet II coaches
    Amfleet II coaches are long-distance passenger railcars used by Amtrak, known for their single-level design, enhanced seating comfort, and use on overnight and extended-route services in the United States.
  • C. MCI D-Series coaches
    MCI D-Series coaches are a line of long-distance, intercity motorcoaches manufactured by Motor Coach Industries and widely used by major bus operators across North America.
  • D. Amfleet railcar family chosen
    The Amfleet railcar family is a series of stainless-steel, tubular passenger coaches built by Budd for Amtrak in the 1970s and 1980s, widely used on intercity and regional routes across the United States.
  • E. Amfleet cafe car
    The Amfleet cafe car is a type of Amtrak passenger railcar equipped with a food-service area and seating, commonly used on intercity routes in the United States.
  • 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_69c68a64228c8190affaec2a8127ce7b completed March 27, 2026, 1:47 p.m.
NER Named-entity recognition batch_69c6f34c28648190a426b5d7623b41e8 completed March 27, 2026, 9:14 p.m.
NED1 Entity disambiguation (via context triple) batch_69c82791ff2c81909967f145d24ff036 completed March 28, 2026, 7:10 p.m.
Created at: March 27, 2026, 3:13 p.m.