Triple

T20218501
Position Surface form Disambiguated ID Type / Status
Subject Denver Zephyr E495188 entity
Predicate notableFeature P105 FINISHED
Object Vista-Dome cars
Vista-Dome cars were streamlined passenger railcars featuring elevated glass-domed sections that provided passengers with panoramic scenic views during train journeys.
E1418131 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: Vista-Dome cars | Statement: [Denver Zephyr, notableFeature, Vista-Dome cars]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Vista-Dome cars
Context triple: [Denver Zephyr, notableFeature, Vista-Dome cars]
  • A. Challenger dome-coach cars
    Challenger dome-coach cars are restored mid-20th-century Union Pacific passenger railcars featuring elevated dome seating for scenic viewing, used today on the railroad’s Heritage Fleet excursion trains.
  • B. 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.
  • C. Bombardier ICTS Mark I cars
    Bombardier ICTS Mark I cars are early-generation automated light rail vehicles that use linear induction motor technology and were widely deployed on medium-capacity urban transit lines such as Toronto’s Scarborough RT.
  • D. CAF cars
    CAF cars are electric multiple-unit subway trains manufactured by the Spanish company Construcciones y Auxiliar de Ferrocarriles (CAF) and used for passenger service on urban metro systems.
  • E. CTA 2400-series railcars
    The CTA 2400-series railcars were an earlier generation of Chicago Transit Authority rapid transit cars that served as a key workhorse of the “L” system before being succeeded by later series.
  • 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: Vista-Dome cars
Triple: [Denver Zephyr, notableFeature, Vista-Dome cars]
Generated description
Vista-Dome cars were streamlined passenger railcars featuring elevated glass-domed sections that provided passengers with panoramic scenic views during train journeys.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Vista-Dome cars
Target entity description: Vista-Dome cars were streamlined passenger railcars featuring elevated glass-domed sections that provided passengers with panoramic scenic views during train journeys.
  • A. Challenger dome-coach cars
    Challenger dome-coach cars are restored mid-20th-century Union Pacific passenger railcars featuring elevated dome seating for scenic viewing, used today on the railroad’s Heritage Fleet excursion trains.
  • B. 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.
  • C. Bombardier ICTS Mark I cars
    Bombardier ICTS Mark I cars are early-generation automated light rail vehicles that use linear induction motor technology and were widely deployed on medium-capacity urban transit lines such as Toronto’s Scarborough RT.
  • D. CAF cars
    CAF cars are electric multiple-unit subway trains manufactured by the Spanish company Construcciones y Auxiliar de Ferrocarriles (CAF) and used for passenger service on urban metro systems.
  • E. CTA 2400-series railcars
    The CTA 2400-series railcars were an earlier generation of Chicago Transit Authority rapid transit cars that served as a key workhorse of the “L” system before being succeeded by later series.
  • 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_69da626cff80819097b530718a7c98b6 completed April 11, 2026, 3:02 p.m.
NER Named-entity recognition batch_69e66edaeeb08190bb74bd4a10aceca2 completed April 20, 2026, 6:22 p.m.
NED1 Entity disambiguation (via context triple) batch_6a0843f6580c8190a615d79f15f8143d completed May 16, 2026, 10:16 a.m.
NEDg Description generation batch_6a08449001b4819089cd6399ad76fe49 completed May 16, 2026, 10:18 a.m.
NED2 Entity disambiguation (via description) batch_6a08452b6f9c8190bcaf705698b4a6d2 completed May 16, 2026, 10:21 a.m.
Created at: April 11, 2026, 11:39 p.m.