Triple

T20179451
Position Surface form Disambiguated ID Type / Status
Subject EMC/EMD diesel locomotives E492686 entity
Predicate notableModel P1503 FINISHED
Object EMD SW1
The EMD SW1 is an early diesel-electric switcher locomotive introduced in the late 1930s that became widely used in North American rail yards for light switching and industrial service.
 E1425956 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 SW1 | Statement: [EMC/EMD diesel locomotives, notableModel, EMD SW1]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: EMD SW1
Context triple: [EMC/EMD diesel locomotives, notableModel, EMD SW1]
  • A. EMD SD9
    The EMD SD9 is a six-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division in the 1950s, widely used by North American railroads for heavy freight service.
  • B. EMD E7
    The EMD E7 is a streamlined, cab-unit diesel-electric passenger locomotive built by General Motors’ Electro-Motive Division in the late 1940s and widely used by major U.S. railroads during the early dieselization era.
  • 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 E8
    The EMD E8 is a streamlined, diesel-electric passenger locomotive built by General Motors’ Electro-Motive Division in the late 1940s and 1950s, widely used by major North American railroads.
  • E. EMD F3
    The EMD F3 is a streamlined, diesel-electric freight locomotive built by General Motors’ Electro-Motive Division in the late 1940s as part of the iconic F-unit series widely used across North American railroads.
  • 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 SW1
Triple: [EMC/EMD diesel locomotives, notableModel, EMD SW1]
Generated description
The EMD SW1 is an early diesel-electric switcher locomotive introduced in the late 1930s that became widely used in North American rail yards for light switching and industrial service.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: EMD SW1
Target entity description: The EMD SW1 is an early diesel-electric switcher locomotive introduced in the late 1930s that became widely used in North American rail yards for light switching and industrial service.
  • A. EMD SD9
    The EMD SD9 is a six-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division in the 1950s, widely used by North American railroads for heavy freight service.
  • B. EMD E7
    The EMD E7 is a streamlined, cab-unit diesel-electric passenger locomotive built by General Motors’ Electro-Motive Division in the late 1940s and widely used by major U.S. railroads during the early dieselization era.
  • 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 E8
    The EMD E8 is a streamlined, diesel-electric passenger locomotive built by General Motors’ Electro-Motive Division in the late 1940s and 1950s, widely used by major North American railroads.
  • E. EMD F3
    The EMD F3 is a streamlined, diesel-electric freight locomotive built by General Motors’ Electro-Motive Division in the late 1940s as part of the iconic F-unit series widely used across North American railroads.
  • F. None of above. chosen

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_6a08693f41748190af0f3e86366da3c7 completed May 16, 2026, 12:55 p.m.
NEDg Description generation batch_6a086d16771c819088a5e5f34e927611 completed May 16, 2026, 1:11 p.m.
NED2 Entity disambiguation (via description) batch_6a086e5854748190a302ff625f2eb9bd completed May 16, 2026, 1:17 p.m.
Created at: April 11, 2026, 11:36 p.m.