Triple
T8655093
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Green Line E branch |
E205394
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object | Type 9 Light Rail Vehicle |
E35647
|
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: Type 9 Light Rail Vehicle | Statement: [Green Line E branch, usesRollingStock, Type 9 Light Rail Vehicle]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Type 9 Light Rail Vehicle Context triple: [Green Line E branch, usesRollingStock, Type 9 Light Rail Vehicle]
-
A.
MBTA Type 9 Light Rail Vehicle
chosen
The MBTA Type 9 Light Rail Vehicle is a modern, low-floor streetcar used on Boston’s Green Line that features improved accessibility, passenger comfort, and energy efficiency compared to earlier MBTA light rail fleets.
-
B.
Kinkisharyo light rail vehicles
Kinkisharyo light rail vehicles are modern electric multiple-unit trains manufactured by the Japanese company Kinki Sharyo, widely used in North American light rail systems for urban passenger transit.
-
C.
Siemens P2000 light rail vehicles
Siemens P2000 light rail vehicles are a fleet of electric light rail cars built by Siemens for use on Los Angeles Metro Rail lines.
-
D.
M9 electric multiple unit
The M9 electric multiple unit is a modern commuter rail train used by the Long Island Rail Road, designed to replace older fleets with improved performance, safety, and passenger amenities.
-
E.
Bombardier Flexity trams
Bombardier Flexity trams are a family of modern, low-floor light rail vehicles designed for urban public transport systems worldwide.
- 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_69ca8350897c819086cde7596fbe5fe7 |
completed | March 30, 2026, 2:06 p.m. |
| NER | Named-entity recognition | batch_69cc4844586081909b687e278496eefa |
completed | March 31, 2026, 10:18 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cf285de8c081908abca2189f206a40 |
completed | April 3, 2026, 2:39 a.m. |
Created at: March 30, 2026, 6:29 p.m.