Triple
T4178908
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA diesel locomotives |
E86545
|
entity |
| Predicate | instanceOf |
P0
|
FINISHED |
| Object | diesel locomotive fleet |
C8948
|
CONCEPT FINISHED |
How this triple was built (1 step)
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.
CD
Concept disambiguation
gpt-5-mini-2025-08-07
Target class: diesel locomotive fleet Context triple: [MBTA diesel locomotives, instanceOf, diesel locomotive fleet]
-
A.
diesel-electric multiple unit family
A diesel-electric multiple unit family is a group of closely related self-propelled rail vehicles that use onboard diesel engines to generate electricity for traction motors, sharing common design, components, and performance characteristics.
-
B.
streamlined locomotive
A streamlined locomotive is a high-speed railway engine designed with smooth, aerodynamic contours to reduce air resistance and improve efficiency and performance.
-
C.
railway locomotive
A railway locomotive is a powered rail vehicle that provides the motive force to pull or push trains along railway tracks.
-
D.
electric locomotive class
An electric locomotive class is a category of railway locomotives designed and grouped by shared technical and performance characteristics, all powered by electricity from external sources such as overhead lines or third rails.
-
E.
rolling stock
chosen
Rolling stock refers to all the vehicles that move on a railway, including locomotives, passenger coaches, freight wagons, and maintenance units.
- F. None of above.
Provenance (1 batch)
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_69aed93de98c8190ad838ce507b77c8a |
completed | March 9, 2026, 2:29 p.m. |
Created at: March 9, 2026, 3:45 p.m.