Triple

T18832772
Position Surface form Disambiguated ID Type / Status
Subject USRA Light Mountain 4-8-2 E460575 entity
Predicate designStandard P1587 FINISHED
Object USRA standard light 4-8-2
The USRA standard light 4-8-2 was a widely used United States Railroad Administration "Mountain" type steam locomotive design intended as a versatile, medium-weight mainline passenger and freight engine during the World War I era.
E1345273 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 standard light 4-8-2 | Statement: [USRA Light Mountain 4-8-2, designStandard, USRA standard light 4-8-2]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: USRA standard light 4-8-2
Context triple: [USRA Light Mountain 4-8-2, designStandard, USRA standard light 4-8-2]
  • A. 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.
  • B. 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.
  • C. 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.
  • D. USRA 2-8-8-2 articulated locomotive
    The USRA 2-8-8-2 articulated locomotive was a heavy freight steam engine design developed under the United States Railroad Administration during World War I, known for its powerful compound articulated configuration used by multiple American railroads.
  • E. USRA 4-6-0 Ten‑Wheeler
    The USRA 4-6-0 Ten‑Wheeler is a standardized World War I–era American steam locomotive type with a 4-6-0 wheel arrangement, designed for versatile mixed-traffic service under the United States Railroad Administration.
  • 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 standard light 4-8-2
Triple: [USRA Light Mountain 4-8-2, designStandard, USRA standard light 4-8-2]
Generated description
The USRA standard light 4-8-2 was a widely used United States Railroad Administration "Mountain" type steam locomotive design intended as a versatile, medium-weight mainline passenger and freight engine during the World War I era.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: USRA standard light 4-8-2
Target entity description: The USRA standard light 4-8-2 was a widely used United States Railroad Administration "Mountain" type steam locomotive design intended as a versatile, medium-weight mainline passenger and freight engine during the World War I era.
  • A. 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.
  • B. 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.
  • C. 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.
  • D. USRA 2-8-8-2 articulated locomotive
    The USRA 2-8-8-2 articulated locomotive was a heavy freight steam engine design developed under the United States Railroad Administration during World War I, known for its powerful compound articulated configuration used by multiple American railroads.
  • E. USRA 4-6-0 Ten‑Wheeler
    The USRA 4-6-0 Ten‑Wheeler is a standardized World War I–era American steam locomotive type with a 4-6-0 wheel arrangement, designed for versatile mixed-traffic service under the United States Railroad Administration.
  • 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_69d8dcf94c288190a06dea029ae4b223 completed April 10, 2026, 11:20 a.m.
NER Named-entity recognition batch_69e5a99b540c8190a29e5f9d56791d41 completed April 20, 2026, 4:20 a.m.
NED1 Entity disambiguation (via context triple) batch_6a05676782048190810125e6b9317bcd completed May 14, 2026, 6:10 a.m.
NEDg Description generation batch_6a05692c88c481909a7e321a4975e12f completed May 14, 2026, 6:18 a.m.
NED2 Entity disambiguation (via description) batch_6a0569c79b5c8190a63326c332674dd7 completed May 14, 2026, 6:20 a.m.
Created at: April 10, 2026, 11:56 a.m.