Triple

T1022844
Position Surface form Disambiguated ID Type / Status
Subject United States Railroad Administration E22076 entity
Predicate notableOutput P1448 FINISHED
Object 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.
E121803 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 Light Mikado 2-8-2 locomotive design | Statement: [United States Railroad Administration, notableOutput, USRA Light Mikado 2-8-2 locomotive design]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: USRA Light Mikado 2-8-2 locomotive design
Context triple: [United States Railroad Administration, notableOutput, USRA Light Mikado 2-8-2 locomotive design]
  • A. Atchison Topeka and Santa Fe 4-8-4 locomotive
    The Atchison, Topeka and Santa Fe 4-8-4 locomotive is a powerful steam engine from the famed Santa Fe Railway, known for hauling high-speed passenger and heavy freight trains across the American West in the mid-20th century.
  • B. Southern Pacific Cab Forward locomotive
    The Southern Pacific Cab Forward locomotive is a distinctive class of steam engines with the cab placed at the front for crew safety, famously used by the Southern Pacific Railroad to haul trains through long, smoky mountain tunnels and snow sheds in the American West.
  • C. Union Pacific inspection cars
    Union Pacific inspection cars are specially outfitted railroad cars used by the Union Pacific Railroad to carry officials and inspectors for track, infrastructure, and operational evaluations along the rail network.
  • D. Union Pacific lounge cars
    Union Pacific lounge cars were specialized passenger railcars designed to provide comfortable seating, social spaces, and premium amenities on Union Pacific’s long-distance trains.
  • E. Union Pacific dome cars
    Union Pacific dome cars were distinctive passenger railcars featuring elevated glass-enclosed viewing domes that offered panoramic scenery on Union Pacific’s long-distance trains.
  • 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 Light Mikado 2-8-2 locomotive design
Triple: [United States Railroad Administration, notableOutput, USRA Light Mikado 2-8-2 locomotive design]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: USRA Light Mikado 2-8-2 locomotive design
Target entity description: 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.
  • A. Atchison Topeka and Santa Fe 4-8-4 locomotive
    The Atchison, Topeka and Santa Fe 4-8-4 locomotive is a powerful steam engine from the famed Santa Fe Railway, known for hauling high-speed passenger and heavy freight trains across the American West in the mid-20th century.
  • B. Southern Pacific Cab Forward locomotive
    The Southern Pacific Cab Forward locomotive is a distinctive class of steam engines with the cab placed at the front for crew safety, famously used by the Southern Pacific Railroad to haul trains through long, smoky mountain tunnels and snow sheds in the American West.
  • C. Union Pacific inspection cars
    Union Pacific inspection cars are specially outfitted railroad cars used by the Union Pacific Railroad to carry officials and inspectors for track, infrastructure, and operational evaluations along the rail network.
  • D. Union Pacific lounge cars
    Union Pacific lounge cars were specialized passenger railcars designed to provide comfortable seating, social spaces, and premium amenities on Union Pacific’s long-distance trains.
  • E. Union Pacific dome cars
    Union Pacific dome cars were distinctive passenger railcars featuring elevated glass-enclosed viewing domes that offered panoramic scenery on Union Pacific’s long-distance trains.
  • 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_69a493d6e380819097b384986ffc315c completed March 1, 2026, 7:30 p.m.
NER Named-entity recognition batch_69a4b7e0f8908190bfe0a4cd8b31dfed completed March 1, 2026, 10:04 p.m.
NED1 Entity disambiguation (via context triple) batch_69ac3bb63f14819098f5e32af3b98508 completed March 7, 2026, 2:52 p.m.
NEDg Description generation batch_69ac3de4fbb88190855cf92af51fe70b completed March 7, 2026, 3:01 p.m.
NED2 Entity disambiguation (via description) batch_69ac3e45d9e88190bc88d037c00c3ecc completed March 7, 2026, 3:03 p.m.
Created at: March 1, 2026, 7:41 p.m.