Triple
T22004675
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Durango and Silverton Narrow Gauge Railroad |
E543419
|
entity |
| Predicate | locomotiveType |
P5426
|
FINISHED |
| Object | K-36 class steam locomotives |
—
|
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: K-36 class steam locomotives | Statement: [Durango and Silverton Narrow Gauge Railroad, locomotiveType, K-36 class steam locomotives]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: K-36 class steam locomotives Context triple: [Durango and Silverton Narrow Gauge Railroad, locomotiveType, K-36 class steam locomotives]
-
A.
K-36 steam locomotives
The K-36 steam locomotives are a class of narrow-gauge, 2-8-2 “Mikado” type engines built for the Denver & Rio Grande Western Railroad, now preserved and operated on heritage lines such as the Cumbres and Toltec Scenic Railroad.
-
B.
K-37 steam locomotives
The K-37 steam locomotives are a class of powerful narrow-gauge 2-8-2 “Mikado” engines originally built for the Denver & Rio Grande Western Railroad and now preserved and operated on heritage lines such as the Cumbres and Toltec Scenic Railroad.
-
C.
Class 91 locomotive
The Class 91 locomotive is a high-speed electric locomotive used on Britain’s East Coast Main Line, designed for 140 mph operation and commonly paired with Mark 4 coaching stock.
-
D.
Class 90 locomotive
The Class 90 locomotive is a British electric locomotive class introduced in the late 1980s, widely used for both high-speed passenger and heavy freight services on the UK rail network.
-
E.
Class 68 locomotive
The Class 68 locomotive is a modern British diesel-electric locomotive used for passenger and freight services, known for its high performance, reliability, and distinctive angular design.
- 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: K-36 class steam locomotives Target entity description: The K-36 class steam locomotives are powerful narrow-gauge 2-8-2 “Mikado” engines built in the 1920s for the Denver & Rio Grande Western Railroad, now famed for hauling tourist trains on Colorado’s heritage mountain railways.
-
A.
K-36 steam locomotives
chosen
The K-36 steam locomotives are a class of narrow-gauge, 2-8-2 “Mikado” type engines built for the Denver & Rio Grande Western Railroad, now preserved and operated on heritage lines such as the Cumbres and Toltec Scenic Railroad.
-
B.
K-37 steam locomotives
The K-37 steam locomotives are a class of powerful narrow-gauge 2-8-2 “Mikado” engines originally built for the Denver & Rio Grande Western Railroad and now preserved and operated on heritage lines such as the Cumbres and Toltec Scenic Railroad.
-
C.
Class 91 locomotive
The Class 91 locomotive is a high-speed electric locomotive used on Britain’s East Coast Main Line, designed for 140 mph operation and commonly paired with Mark 4 coaching stock.
-
D.
Class 90 locomotive
The Class 90 locomotive is a British electric locomotive class introduced in the late 1980s, widely used for both high-speed passenger and heavy freight services on the UK rail network.
-
E.
Class 68 locomotive
The Class 68 locomotive is a modern British diesel-electric locomotive used for passenger and freight services, known for its high performance, reliability, and distinctive angular design.
- F. None of above.
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_69e11e2db934819095556760c7d85e4d |
completed | April 16, 2026, 5:36 p.m. |
| NER | Named-entity recognition | batch_69f1276d81e4819083a40e51249e7fd7 |
completed | April 28, 2026, 9:32 p.m. |
Created at: April 16, 2026, 8:20 p.m.