Triple
T9011419
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | GO Transit Milton line |
E215481
|
entity |
| Predicate | rollingStock |
P1305
|
FINISHED |
| Object |
MPI MP40PH-3C locomotive
The MPI MP40PH-3C is a modern diesel-electric passenger locomotive built by MotivePower for North American commuter rail services, known for its high horsepower and compliance with stringent emissions standards.
|
E287561
|
NE FINISHED |
How this triple was built (4 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: MPI MP40PH-3C locomotive | Statement: [GO Transit Milton line, rollingStock, MPI MP40PH-3C locomotive]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MPI MP40PH-3C locomotive Context triple: [GO Transit Milton line, rollingStock, MPI MP40PH-3C locomotive]
-
A.
MPI MP36PH-3C locomotive
The MPI MP36PH-3C is a diesel-electric passenger locomotive commonly used in North American commuter rail service for hauling bi-level coach trains.
-
B.
Ge 4/4 III electric locomotive
The Ge 4/4 III is a modern, high-performance narrow-gauge electric locomotive used by the Rhaetian Railway for both passenger and freight services on its Swiss alpine network.
-
C.
EMD DM30AC locomotives
EMD DM30AC locomotives are dual-mode diesel-electric locomotives built for the Long Island Rail Road, capable of operating in both diesel and third-rail electric modes to serve non-electrified and electrified territory.
-
D.
Ge 4/4 II electric locomotive
The Ge 4/4 II is a class of narrow-gauge electric locomotives used by Swiss alpine railways, known for their reliability and versatility in both passenger and freight service on steep, winding mountain lines.
-
E.
EMD F59PH locomotive
The EMD F59PH locomotive is a four-axle diesel-electric passenger locomotive built by Electro-Motive Division in the late 1980s and 1990s, widely used by North American commuter rail agencies.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: MPI MP40PH-3C locomotive Triple: [GO Transit Milton line, rollingStock, MPI MP40PH-3C locomotive]
Generated description
The MPI MP40PH-3C is a modern diesel-electric passenger locomotive built by MotivePower for North American commuter rail services, known for its high horsepower and compliance with stringent emissions standards.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MPI MP40PH-3C locomotive Target entity description: The MPI MP40PH-3C is a modern diesel-electric passenger locomotive built by MotivePower for North American commuter rail services, known for its high horsepower and compliance with stringent emissions standards.
-
A.
MPI MP36PH-3C locomotive
chosen
The MPI MP36PH-3C is a diesel-electric passenger locomotive commonly used in North American commuter rail service for hauling bi-level coach trains.
-
B.
Ge 4/4 III electric locomotive
The Ge 4/4 III is a modern, high-performance narrow-gauge electric locomotive used by the Rhaetian Railway for both passenger and freight services on its Swiss alpine network.
-
C.
EMD DM30AC locomotives
EMD DM30AC locomotives are dual-mode diesel-electric locomotives built for the Long Island Rail Road, capable of operating in both diesel and third-rail electric modes to serve non-electrified and electrified territory.
-
D.
Ge 4/4 II electric locomotive
The Ge 4/4 II is a class of narrow-gauge electric locomotives used by Swiss alpine railways, known for their reliability and versatility in both passenger and freight service on steep, winding mountain lines.
-
E.
EMD F59PH locomotive
The EMD F59PH locomotive is a four-axle diesel-electric passenger locomotive built by Electro-Motive Division in the late 1980s and 1990s, widely used by North American commuter rail agencies.
- F. None of above.
Provenance (5 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_69ca83a2bf088190986ee7a8eb90407d |
completed | March 30, 2026, 2:07 p.m. |
| NER | Named-entity recognition | batch_69cc69c1571881908d0b144786b5ee1f |
completed | April 1, 2026, 12:41 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cfdb9dca848190952427bb5712081f |
completed | April 3, 2026, 3:24 p.m. |
| NEDg | Description generation | batch_69cfdc5b230881908057cc868e44ea44 |
completed | April 3, 2026, 3:27 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69cfdcfc28288190b849b3f0216a7e9a |
completed | April 3, 2026, 3:30 p.m. |
Created at: March 30, 2026, 7:06 p.m.