Triple

T6652055
Position Surface form Disambiguated ID Type / Status
Subject EMD GP40-2H E150844 entity
Predicate primeMover P19407 FINISHED
Object EMD 645-series diesel engine
The EMD 645-series diesel engine is a family of two-stroke, turbocharged locomotive powerplants widely used in North American diesel-electric locomotives from the late 1960s onward.
E609867 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 645-series diesel engine | Statement: [EMD GP40-2H, primeMover, EMD 645-series diesel engine]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: EMD 645-series diesel engine
Context triple: [EMD GP40-2H, primeMover, EMD 645-series diesel engine]
  • A. EMC/EMD diesel locomotives
    EMC/EMD diesel locomotives are a family of North American diesel-electric engines built by Electro-Motive Corporation/Division that played a major role in replacing steam power on many railroads.
  • B. V-54 diesel engine
    The V-54 diesel engine is a Soviet V-12, water-cooled, four-stroke diesel powerplant widely used to propel T-54 main battle tanks and their variants.
  • C. Duramax V8 diesel
    The Duramax V8 diesel is a family of turbocharged diesel engines co-developed by General Motors and Isuzu, widely used in heavy-duty Chevrolet and GMC trucks for their strong torque, towing capability, and durability.
  • 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 645-series diesel engine
Triple: [EMD GP40-2H, primeMover, EMD 645-series diesel engine]
Generated description
The EMD 645-series diesel engine is a family of two-stroke, turbocharged locomotive powerplants widely used in North American diesel-electric locomotives from the late 1960s onward.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: EMD 645-series diesel engine
Target entity description: The EMD 645-series diesel engine is a family of two-stroke, turbocharged locomotive powerplants widely used in North American diesel-electric locomotives from the late 1960s onward.
  • A. EMC/EMD diesel locomotives
    EMC/EMD diesel locomotives are a family of North American diesel-electric engines built by Electro-Motive Corporation/Division that played a major role in replacing steam power on many railroads.
  • B. V-54 diesel engine
    The V-54 diesel engine is a Soviet V-12, water-cooled, four-stroke diesel powerplant widely used to propel T-54 main battle tanks and their variants.
  • C. Duramax V8 diesel
    The Duramax V8 diesel is a family of turbocharged diesel engines co-developed by General Motors and Isuzu, widely used in heavy-duty Chevrolet and GMC trucks for their strong torque, towing capability, and durability.
  • 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

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_69c687f2c9508190a60b9aad31d3f358 completed March 27, 2026, 1:36 p.m.
NER Named-entity recognition batch_69c6b046c1408190af288575e40936d0 completed March 27, 2026, 4:28 p.m.
NED1 Entity disambiguation (via context triple) batch_69c6eefb3b6c8190ba797dc51966e3a5 completed March 27, 2026, 8:56 p.m.
NEDg Description generation batch_69c6f1ed97248190ab2253b3b2457f4f completed March 27, 2026, 9:09 p.m.
NED2 Entity disambiguation (via description) batch_69c6f2c18c0081908958b7ffeed7a787 completed March 27, 2026, 9:12 p.m.
Created at: March 27, 2026, 2:01 p.m.