Triple
T20218501
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Denver Zephyr |
E495188
|
entity |
| Predicate | notableFeature |
P105
|
FINISHED |
| Object | Vista-Dome cars |
—
|
NE NERFINISHED |
How this triple was built (3 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.
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 (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_69da626cff80819097b530718a7c98b6 |
completed | April 11, 2026, 3:02 p.m. |
| NER | Named-entity recognition | batch_69e66edaeeb08190bb74bd4a10aceca2 |
completed | April 20, 2026, 6:22 p.m. |
Created at: April 11, 2026, 11:39 p.m.