Triple

T6696622
Position Surface form Disambiguated ID Type / Status
Subject Sounder South Line E152765 entity
Predicate rollingStock P1305 FINISHED
Object MPI MPXpress locomotive
The MPI MPXpress locomotive is a series of modern diesel-electric passenger locomotives built by MotivePower Industries for commuter rail services across North America.
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 MPXpress locomotive | Statement: [Sounder South Line, rollingStock, MPI MPXpress locomotive]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MPI MPXpress locomotive
Context triple: [Sounder South Line, rollingStock, MPI MPXpress 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. EMD FT locomotive
    The EMD FT locomotive is a pioneering diesel-electric freight locomotive introduced in the late 1930s that helped establish Electro-Motive Division as a leader in replacing steam power on American railroads.
  • C. EMD GP7 locomotive
    The EMD GP7 locomotive is a widely used four-axle diesel-electric road switcher introduced in the late 1940s that helped usher in the transition from steam to diesel power on North American railroads.
  • D. 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.
  • E. EMD GP9 locomotive
    The EMD GP9 locomotive is a widely used four-axle diesel-electric road switcher built in the 1950s that became one of North America's most successful and versatile freight and passenger locomotives.
  • 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 MPXpress locomotive
Triple: [Sounder South Line, rollingStock, MPI MPXpress locomotive]
Generated description
The MPI MPXpress locomotive is a series of modern diesel-electric passenger locomotives built by MotivePower Industries for commuter rail services across North America.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: MPI MPXpress locomotive
Target entity description: The MPI MPXpress locomotive is a series of modern diesel-electric passenger locomotives built by MotivePower Industries for commuter rail services across North America.
  • 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. EMD FT locomotive
    The EMD FT locomotive is a pioneering diesel-electric freight locomotive introduced in the late 1930s that helped establish Electro-Motive Division as a leader in replacing steam power on American railroads.
  • C. EMD GP7 locomotive
    The EMD GP7 locomotive is a widely used four-axle diesel-electric road switcher introduced in the late 1940s that helped usher in the transition from steam to diesel power on North American railroads.
  • D. 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.
  • E. EMD GP9 locomotive
    The EMD GP9 locomotive is a widely used four-axle diesel-electric road switcher built in the 1950s that became one of North America's most successful and versatile freight and passenger locomotives.
  • 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_69c6880687b08190805278b504d1c92c completed March 27, 2026, 1:37 p.m.
NER Named-entity recognition batch_69c6d0a3a2408190bb7be4613f896bdc completed March 27, 2026, 6:46 p.m.
NED1 Entity disambiguation (via context triple) batch_69c6f7bba1008190a0ea11aabdb3f360 completed March 27, 2026, 9:33 p.m.
NEDg Description generation batch_69c6f86fb37c8190ba0ed52d998643d6 completed March 27, 2026, 9:36 p.m.
NED2 Entity disambiguation (via description) batch_69c6f8d6c9d481908d988984e0aed6bc completed March 27, 2026, 9:38 p.m.
Created at: March 27, 2026, 2:05 p.m.