Triple

T4561524
Position Surface form Disambiguated ID Type / Status
Subject USRA standard steam locomotive designs E121801 entity
Predicate hasPart P35 FINISHED
Object USRA 0-8-0 switcher
The USRA 0-8-0 switcher was a standardized heavy steam switching locomotive widely used in North American rail yards during the early 20th century.
E453380 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: USRA 0-8-0 switcher | Statement: [USRA standard steam locomotive designs, hasPart, USRA 0-8-0 switcher]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: USRA 0-8-0 switcher
Context triple: [USRA standard steam locomotive designs, hasPart, USRA 0-8-0 switcher]
  • A. USRA 0-6-0 switcher
    The USRA 0-6-0 switcher was a standardized American steam locomotive type designed for yard and switching duties under the United States Railroad Administration during World War I.
  • B. USRA 2-6-6-2 articulated locomotive
    The USRA 2-6-6-2 articulated locomotive was a standardized World War I–era American steam freight engine featuring a Mallet-type articulated wheel arrangement designed for heavy, slow freight service on steep grades and curving track.
  • C. USRA Light Santa Fe 2-10-2
    The USRA Light Santa Fe 2-10-2 was a standardized heavy freight steam locomotive design developed under the United States Railroad Administration during World War I, featuring a 2-10-2 wheel arrangement optimized for slow, powerful hauling.
  • D. USRA Light Pacific 4-6-2
    The USRA Light Pacific 4-6-2 was a widely used American passenger steam locomotive type developed under the United States Railroad Administration during World War I, known for its balanced performance and standardized design.
  • E. USRA Light Mikado 2-8-2 locomotive design
    The USRA Light Mikado 2-8-2 locomotive design was a widely adopted standard World War I–era American steam freight locomotive, known for its balanced power, efficiency, and influence on subsequent 2-8-2 designs.
  • 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: USRA 0-8-0 switcher
Triple: [USRA standard steam locomotive designs, hasPart, USRA 0-8-0 switcher]
Generated description
The USRA 0-8-0 switcher was a standardized heavy steam switching locomotive widely used in North American rail yards during the early 20th century.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: USRA 0-8-0 switcher
Target entity description: The USRA 0-8-0 switcher was a standardized heavy steam switching locomotive widely used in North American rail yards during the early 20th century.
  • A. USRA 0-6-0 switcher
    The USRA 0-6-0 switcher was a standardized American steam locomotive type designed for yard and switching duties under the United States Railroad Administration during World War I.
  • B. USRA 2-6-6-2 articulated locomotive
    The USRA 2-6-6-2 articulated locomotive was a standardized World War I–era American steam freight engine featuring a Mallet-type articulated wheel arrangement designed for heavy, slow freight service on steep grades and curving track.
  • C. USRA Light Santa Fe 2-10-2
    The USRA Light Santa Fe 2-10-2 was a standardized heavy freight steam locomotive design developed under the United States Railroad Administration during World War I, featuring a 2-10-2 wheel arrangement optimized for slow, powerful hauling.
  • D. USRA Light Pacific 4-6-2
    The USRA Light Pacific 4-6-2 was a widely used American passenger steam locomotive type developed under the United States Railroad Administration during World War I, known for its balanced performance and standardized design.
  • E. USRA Light Mikado 2-8-2 locomotive design
    The USRA Light Mikado 2-8-2 locomotive design was a widely adopted standard World War I–era American steam freight locomotive, known for its balanced power, efficiency, and influence on subsequent 2-8-2 designs.
  • 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_69bd463f156881908a99aca69c5721ac completed March 20, 2026, 1:06 p.m.
NER Named-entity recognition batch_69bd582d98fc8190a760dbb5f20c775d completed March 20, 2026, 2:22 p.m.
NED1 Entity disambiguation (via context triple) batch_69bdd3aa3b9081908984777207f4040e completed March 20, 2026, 11:09 p.m.
NEDg Description generation batch_69bdd4b703748190a17cf4f02456c39a completed March 20, 2026, 11:13 p.m.
NED2 Entity disambiguation (via description) batch_69bdd548ea348190818f4335b8ebad2e completed March 20, 2026, 11:16 p.m.
Created at: March 20, 2026, 1:09 p.m.