Triple
T4056300
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Commuter Rail coaches |
E84701
|
entity |
| Predicate | hasVariant |
P455
|
FINISHED |
| Object | Hyundai Rotem bi-level coach |
E410815
|
NE FINISHED |
How this triple was built (2 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: Hyundai Rotem bi-level coach | Statement: [MBTA Commuter Rail coaches, hasVariant, Hyundai Rotem bi-level coach]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Hyundai Rotem bi-level coach Context triple: [MBTA Commuter Rail coaches, hasVariant, Hyundai Rotem bi-level coach]
-
A.
Kawasaki bi-level coach
The Kawasaki bi-level coach is a double-decker commuter rail passenger car built by Kawasaki Heavy Industries and widely used on systems such as the MBTA Commuter Rail to increase capacity.
-
B.
Rotem bi-level coach
chosen
The Rotem bi-level coach is a double-decker commuter rail passenger car built by Hyundai Rotem to increase capacity and comfort on services such as the MBTA Commuter Rail.
-
C.
Bombardier BiLevel Coach
The Bombardier BiLevel Coach is a double-decker commuter rail car widely used across North America to increase passenger capacity on regional and suburban train services.
-
D.
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.
-
E.
Hyundai Rotem low-floor tram
The Hyundai Rotem low-floor tram is a modern, accessible light-rail vehicle designed for urban public transport, featuring a low-floor design for easy boarding and efficient passenger flow.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69aed933bec881909edfa28ebb69c634 |
completed | March 9, 2026, 2:29 p.m. |
| NER | Named-entity recognition | batch_69aefbad953c81909d7b42fae5db9f25 |
completed | March 9, 2026, 4:56 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b56b501c008190ac115240328c6fc9 |
completed | March 14, 2026, 2:06 p.m. |
Created at: March 9, 2026, 3:38 p.m.