Triple
T164836
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Long Island Rail Road |
E2989
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object | DM30AC locomotive |
E20919
|
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: DM30AC locomotive | Statement: [Long Island Rail Road, usesRollingStock, DM30AC locomotive]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: DM30AC locomotive Context triple: [Long Island Rail Road, usesRollingStock, DM30AC locomotive]
-
A.
DE30AC locomotive
chosen
The DE30AC locomotive is a diesel-electric passenger locomotive built by EMD for the Long Island Rail Road, designed for push-pull commuter service with head-end power.
-
B.
GG1 electric locomotive
The GG1 electric locomotive was a streamlined, high-speed electric locomotive class that became an iconic workhorse of American railroading, particularly in the Northeast corridor, during much of the 20th century.
-
C.
M7 electric multiple unit
The M7 electric multiple unit is a modern commuter rail car class built for high-frequency, third-rail electrified service, notably operating on New York’s Long Island Rail Road and similar regional rail networks.
-
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.
MARC Train
MARC Train is a commuter rail service operating in Maryland and the surrounding region, connecting cities such as Washington, D.C., Baltimore, and Martinsburg.
- 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_69a2524ce1e48190ab066bf72859f474 |
completed | Feb. 28, 2026, 2:26 a.m. |
| NER | Named-entity recognition | batch_69a25bae79b48190abfd247410e5918f |
completed | Feb. 28, 2026, 3:06 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a2e3bf71ac819085b47fd03c853d9e |
completed | Feb. 28, 2026, 12:46 p.m. |
Created at: Feb. 28, 2026, 2:34 a.m.