Triple

T4561519
Position Surface form Disambiguated ID Type / Status
Subject USRA standard steam locomotive designs E121801 entity
Predicate hasPart P35 FINISHED
Object USRA Light Mountain 4-8-2
The USRA Light Mountain 4-8-2 was a standardized World War I–era American steam locomotive design used by multiple railroads for mixed-traffic service under the United States Railroad Administration.
 E460575 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 Mountain 4-8-2 | Statement: [USRA standard steam locomotive designs, hasPart, USRA Light Mountain 4-8-2]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: USRA Light Mountain 4-8-2
Context triple: [USRA standard steam locomotive designs, hasPart, USRA Light Mountain 4-8-2]
  • A. USRA Light Mikado 2-8-2
    The USRA Light Mikado 2-8-2 was a widely used World War I–era American freight steam locomotive type designed for balanced performance and standardized construction across multiple railroads.
  • B. 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.
  • C. USRA Heavy Mikado 2-8-2
    The USRA Heavy Mikado 2-8-2 was a standardized World War I–era American steam freight locomotive design known for its robust construction, high tractive effort, and widespread use across multiple railroads.
  • D. USRA Heavy Pacific 4-6-2
    The USRA Heavy Pacific 4-6-2 was a standardized heavy passenger steam locomotive design used by multiple American railroads during the United States Railroad Administration era in World War I.
  • E. WM Class I-2 2-10-0
    WM Class I-2 2-10-0 was a powerful Decapod-type steam locomotive class used by the Western Maryland Railway primarily for heavy freight service over steep grades.
  • 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 Mountain 4-8-2
Triple: [USRA standard steam locomotive designs, hasPart, USRA Light Mountain 4-8-2]
Generated description
The USRA Light Mountain 4-8-2 was a standardized World War I–era American steam locomotive design used by multiple railroads for mixed-traffic service under the United States Railroad Administration.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: USRA Light Mountain 4-8-2
Target entity description: The USRA Light Mountain 4-8-2 was a standardized World War I–era American steam locomotive design used by multiple railroads for mixed-traffic service under the United States Railroad Administration.
  • A. USRA Light Mikado 2-8-2
    The USRA Light Mikado 2-8-2 was a widely used World War I–era American freight steam locomotive type designed for balanced performance and standardized construction across multiple railroads.
  • B. 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.
  • C. USRA Heavy Mikado 2-8-2
    The USRA Heavy Mikado 2-8-2 was a standardized World War I–era American steam freight locomotive design known for its robust construction, high tractive effort, and widespread use across multiple railroads.
  • D. USRA Heavy Pacific 4-6-2
    The USRA Heavy Pacific 4-6-2 was a standardized heavy passenger steam locomotive design used by multiple American railroads during the United States Railroad Administration era in World War I.
  • E. WM Class I-2 2-10-0
    WM Class I-2 2-10-0 was a powerful Decapod-type steam locomotive class used by the Western Maryland Railway primarily for heavy freight service over steep grades.
  • 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_69be03391b3481909fd41ac03abe5d1b completed March 21, 2026, 2:32 a.m.
NEDg Description generation batch_69be0542daf08190b792855c8129ac50 completed March 21, 2026, 2:41 a.m.
NED2 Entity disambiguation (via description) batch_69be05c1dcd48190a08a5748e86a5ac8 completed March 21, 2026, 2:43 a.m.
Created at: March 20, 2026, 1:09 p.m.