Triple

T8981998
Position Surface form Disambiguated ID Type / Status
Subject Seaboard System Railroad E214552 entity
Predicate notableLocomotiveModels P86157 FINISHED
Object EMD GP38-2
The EMD GP38-2 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, known for its reliability and versatility in freight service across North America.
E769315 NE FINISHED

How this triple was built (5 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: EMD GP38-2 | Statement: [Seaboard System Railroad, notableLocomotiveModels, EMD GP38-2]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: EMD GP38-2
Context triple: [Seaboard System Railroad, notableLocomotiveModels, EMD GP38-2]
  • A. EMD GP40-2H
    The EMD GP40-2H is a rebuilt, passenger-equipped variant of the EMD GP40-2 diesel-electric locomotive, featuring head-end power for commuter rail service.
  • B. EMD F40PH
    The EMD F40PH is a widely used four-axle diesel-electric passenger locomotive built by Electro-Motive Division, best known for its long service on North American commuter and intercity railroads.
  • C. 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.
  • D. 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.
  • E. EMD SD40-2 locomotive
    The EMD SD40-2 locomotive is a highly successful and widely used North American diesel-electric freight locomotive introduced in the 1970s, known for its reliability, modular design, and long service life.
  • 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: EMD GP38-2
Triple: [Seaboard System Railroad, notableLocomotiveModels, EMD GP38-2]
Generated description
The EMD GP38-2 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, known for its reliability and versatility in freight service across North America.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: EMD GP38-2
Target entity description: The EMD GP38-2 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, known for its reliability and versatility in freight service across North America.
  • A. EMD GP40-2H
    The EMD GP40-2H is a rebuilt, passenger-equipped variant of the EMD GP40-2 diesel-electric locomotive, featuring head-end power for commuter rail service.
  • B. EMD F40PH
    The EMD F40PH is a widely used four-axle diesel-electric passenger locomotive built by Electro-Motive Division, best known for its long service on North American commuter and intercity railroads.
  • C. 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.
  • D. 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.
  • E. EMD SD40-2 locomotive
    The EMD SD40-2 locomotive is a highly successful and widely used North American diesel-electric freight locomotive introduced in the 1970s, known for its reliability, modular design, and long service life.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: notableLocomotiveModels
Context triple: [Seaboard System Railroad, notableLocomotiveModels, EMD GP38-2]
  • A. typeOfLocomotivesProduced
    Indicates the specific kinds or categories of locomotives that are manufactured or produced by an entity.
  • B. typicalLocomotiveClass
    Indicates that one locomotive class is the standard or most commonly used class for a given context, operator, or service.
  • C. locomotiveWorks
    Indicates a relationship where an entity is a facility or company that builds, repairs, or maintains locomotives.
  • D. preservedLocomotive
    Indicates that a locomotive has been retained and maintained, typically in a museum or heritage setting, rather than being scrapped or left to deteriorate.
  • E. firstLocomotiveName
    Indicates the name assigned to the first locomotive associated with a given entity or context.
  • F. None of above. chosen

Provenance (7 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_69ca839ea8b88190922c6a326ffcc0d3 completed March 30, 2026, 2:07 p.m.
NER Named-entity recognition batch_69cc67a891e881909e4b84ed82491651 completed April 1, 2026, 12:32 a.m.
NED1 Entity disambiguation (via context triple) batch_69cfc974f0f8819085c63deb53b95b80 completed April 3, 2026, 2:06 p.m.
NEDg Description generation batch_69cfca11f7b8819082ea5c74f700cf4b completed April 3, 2026, 2:09 p.m.
NED2 Entity disambiguation (via description) batch_69cfca735c50819088c2805c62d96d62 completed April 3, 2026, 2:10 p.m.
PD Predicate disambiguation batch_69cc5edba0f88190b97401636a076d7a completed March 31, 2026, 11:55 p.m.
PDg Predicate description generation batch_69cc5febd0a08190b2de6fb422343001 completed March 31, 2026, 11:59 p.m.
Created at: March 30, 2026, 7:03 p.m.