Triple

T6462629
Position Surface form Disambiguated ID Type / Status
Subject B&O Railroad Museum E142156 entity
Predicate notableExhibit P22 FINISHED
Object B&O No. 4500
B&O No. 4500 is a historic Baltimore & Ohio Railroad steam locomotive preserved for its significance in early 20th-century American railroading.
E595293 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: B&O No. 4500 | Statement: [B&O Railroad Museum, notableExhibit, B&O No. 4500]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: B&O No. 4500
Context triple: [B&O Railroad Museum, notableExhibit, B&O No. 4500]
  • A. B&O No. 25 William Mason
    B&O No. 25 "William Mason" is a preserved 19th-century steam locomotive famed for its historic design and frequent use in period films and railroad heritage displays.
  • B. B&O No. 2 Atlantic
    B&O No. 2 Atlantic is a historic Baltimore & Ohio Railroad steam locomotive preserved as a prominent example of early American passenger train power.
  • C. Shay locomotive
    The Shay locomotive is a geared steam locomotive design, widely used on logging and industrial railroads for its exceptional low-speed power and ability to handle steep grades and sharp curves.
  • D. 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.
  • E. USRA Heavy Mountain 4-8-2
    The USRA Heavy Mountain 4-8-2 was a standardized World War I–era American steam locomotive design built for heavy passenger and fast freight service, featuring a 4-8-2 wheel arrangement and robust construction for demanding mainline duties.
  • 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: B&O No. 4500
Triple: [B&O Railroad Museum, notableExhibit, B&O No. 4500]
Generated description
B&O No. 4500 is a historic Baltimore & Ohio Railroad steam locomotive preserved for its significance in early 20th-century American railroading.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: B&O No. 4500
Target entity description: B&O No. 4500 is a historic Baltimore & Ohio Railroad steam locomotive preserved for its significance in early 20th-century American railroading.
  • A. B&O No. 25 William Mason
    B&O No. 25 "William Mason" is a preserved 19th-century steam locomotive famed for its historic design and frequent use in period films and railroad heritage displays.
  • B. B&O No. 2 Atlantic
    B&O No. 2 Atlantic is a historic Baltimore & Ohio Railroad steam locomotive preserved as a prominent example of early American passenger train power.
  • C. Shay locomotive
    The Shay locomotive is a geared steam locomotive design, widely used on logging and industrial railroads for its exceptional low-speed power and ability to handle steep grades and sharp curves.
  • D. 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.
  • E. USRA Heavy Mountain 4-8-2
    The USRA Heavy Mountain 4-8-2 was a standardized World War I–era American steam locomotive design built for heavy passenger and fast freight service, featuring a 4-8-2 wheel arrangement and robust construction for demanding mainline duties.
  • 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_69c008d2f91c8190a8178767a35e08fc completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c069f7e5908190ae4d8da2b14d274f completed March 22, 2026, 10:15 p.m.
NED1 Entity disambiguation (via context triple) batch_69c653971f988190847187ae60b6eeb5 completed March 27, 2026, 9:53 a.m.
NEDg Description generation batch_69c654907e1081908a322bd8ac03cd88 completed March 27, 2026, 9:57 a.m.
NED2 Entity disambiguation (via description) batch_69c654fafcd88190b28d49e9fe264246 completed March 27, 2026, 9:59 a.m.
Created at: March 22, 2026, 4:49 p.m.