Triple

T19877878
Position Surface form Disambiguated ID Type / Status
Subject Central Oregon and Pacific Railroad E477686 entity
Predicate usesLocomotiveType P1305 FINISHED
Object 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.
 E1402473 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 SD9 | Statement: [Central Oregon and Pacific Railroad, usesLocomotiveType, EMD SD9]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: EMD SD9
Context triple: [Central Oregon and Pacific Railroad, usesLocomotiveType, EMD SD9]
  • A. 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.
  • 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 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.
  • D. 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.
  • E. Atlantic SD 8139
    Atlantic SD 8139 is the original Atlantic Records LP catalog number for Aretha Franklin’s landmark 1967 soul album "I Never Loved a Man the Way I Love You."
  • 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 SD9
Triple: [Central Oregon and Pacific Railroad, usesLocomotiveType, EMD SD9]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: EMD SD9
Target entity description: 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.
  • A. 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.
  • 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 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.
  • D. 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.
  • E. Atlantic SD 8139
    Atlantic SD 8139 is the original Atlantic Records LP catalog number for Aretha Franklin’s landmark 1967 soul album "I Never Loved a Man the Way I Love You."
  • 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_69d8e51f32b08190b3687f4f60353250 completed April 10, 2026, 11:55 a.m.
NER Named-entity recognition batch_69e658dc8ce08190b005ad49924e5659 completed April 20, 2026, 4:48 p.m.
NED1 Entity disambiguation (via context triple) batch_6a07f6d7d89081909e9d177eb1041f41 completed May 16, 2026, 4:47 a.m.
NEDg Description generation batch_6a07f7d235688190971c9c0063669470 completed May 16, 2026, 4:51 a.m.
NED2 Entity disambiguation (via description) batch_6a07f891e5c081909e30e9ce7c271359 completed May 16, 2026, 4:54 a.m.
Created at: April 10, 2026, 1:52 p.m.