Triple

T10774627
Position Surface form Disambiguated ID Type / Status
Subject Steamtown National Historic Site E254165 entity
Predicate hasLocomotive P12267 FINISHED
Object Union Pacific Big Boy No. 4012 E493346 NE FINISHED

How this triple was built (2 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: Union Pacific Big Boy No. 4012 | Statement: [Steamtown National Historic Site, hasLocomotive, Union Pacific Big Boy No. 4012]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Union Pacific Big Boy No. 4012
Context triple: [Steamtown National Historic Site, hasLocomotive, Union Pacific Big Boy No. 4012]
  • A. Union Pacific No. 119
    Union Pacific No. 119 was the steam locomotive that represented the Union Pacific Railroad at the 1869 Golden Spike ceremony marking the completion of the First Transcontinental Railroad.
  • B. Union Pacific Big Boy class locomotives chosen
    The Union Pacific Big Boy class locomotives were massive 4-8-8-4 articulated steam engines built for Union Pacific Railroad, famed as some of the largest and most powerful steam locomotives ever constructed.
  • C. Union Pacific Challenger
    The Union Pacific Challenger was a named passenger train operated by the Union Pacific Railroad, known for providing comfortable, mid-priced long-distance service across the western United States.
  • D. Union Pacific Heritage Fleet
    The Union Pacific Heritage Fleet is a collection of restored historic passenger cars and locomotives maintained by Union Pacific Railroad for special excursions, public relations, and preservation of the company’s railroading legacy.
  • E. Southern Pacific GS-4
    The Southern Pacific GS-4 is a class of streamlined 4-8-4 "Northern" steam locomotives built in the 1940s for the Southern Pacific Railroad, renowned for their distinctive orange and red "Daylight" livery and high-speed passenger service.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69d6aa609f008190a294200aefcb7bd5 completed April 8, 2026, 7:20 p.m.
NER Named-entity recognition batch_69d7329be784819083b7ec4d85c20acf completed April 9, 2026, 5:01 a.m.
NED1 Entity disambiguation (via context triple) batch_69de238559b48190abc759e744ab0f8e completed April 14, 2026, 11:22 a.m.
Created at: April 8, 2026, 9:16 p.m.