Triple

T20179450
Position Surface form Disambiguated ID Type / Status
Subject EMC/EMD diesel locomotives E492686 entity
Predicate notableModel P1503 FINISHED
Object EMD GP9
The EMD GP9 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division in the 1950s, known for its reliability and versatility in both freight and passenger service.
 E506012 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: EMD GP9 | Statement: [EMC/EMD diesel locomotives, notableModel, EMD GP9]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: EMD GP9
Context triple: [EMC/EMD diesel locomotives, notableModel, EMD GP9]
  • A. EMD GP7
    The EMD GP7 is a four-axle road switcher diesel-electric locomotive introduced in the late 1940s that became one of Electro-Motive Division’s most successful and widely used early road switcher designs in North America.
  • B. EMD GP38
    The EMD GP38 is a four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, widely used by North American railroads for freight service.
  • C. 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.
  • D. EMD GP40
    The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
  • 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: EMD GP9
Triple: [EMC/EMD diesel locomotives, notableModel, EMD GP9]
Generated description
The EMD GP9 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division in the 1950s, known for its reliability and versatility in both freight and passenger service.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: EMD GP9
Target entity description: The EMD GP9 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division in the 1950s, known for its reliability and versatility in both freight and passenger service.
  • A. EMD GP7
    The EMD GP7 is a four-axle road switcher diesel-electric locomotive introduced in the late 1940s that became one of Electro-Motive Division’s most successful and widely used early road switcher designs in North America.
  • B. EMD GP38
    The EMD GP38 is a four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, widely used by North American railroads for freight service.
  • C. 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.
  • D. EMD GP40
    The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
  • E. EMD GP9 locomotive chosen
    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_69da6268a034819081cbd9ea5a1c9475 completed April 11, 2026, 3:02 p.m.
NER Named-entity recognition batch_69e668edf27881909820f9103e72533e completed April 20, 2026, 5:57 p.m.
NED1 Entity disambiguation (via context triple) batch_6a0861082ed08190b6a2d603422c815e completed May 16, 2026, 12:20 p.m.
NEDg Description generation batch_6a086231b440819087671c5c61adcdc6 completed May 16, 2026, 12:25 p.m.
NED2 Entity disambiguation (via description) batch_6a08635869148190992d75a8806f767c completed May 16, 2026, 12:30 p.m.
Created at: April 11, 2026, 11:36 p.m.