Triple
T1865470
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Type 7 Light Rail Vehicle |
E34910
|
entity |
| Predicate | instanceOf |
P0
|
FINISHED |
| Object | articulated railcar |
C2237
|
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: articulated railcar Context triple: [MBTA Type 7 Light Rail Vehicle, instanceOf, articulated railcar]
-
A.
bi-level passenger railcar
A bi-level passenger railcar is a rail vehicle with two passenger decks designed to increase seating capacity and improve space efficiency on trains.
-
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.
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.
-
D.
passenger train
A passenger train is a rail vehicle or series of connected vehicles designed to transport people and their luggage between stations along a fixed route and schedule.
-
E.
light rail vehicle
chosen
A light rail vehicle is a rail-based transit vehicle designed for urban and suburban passenger service, typically operating on dedicated or shared tracks with frequent stops and moderate capacity.
- 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_69a88600b2f88190bc09303e68ab517e |
completed | March 4, 2026, 7:20 p.m. |
Created at: March 4, 2026, 7:34 p.m.