Triple

T19015447
Position Surface form Disambiguated ID Type / Status
Subject Swindon Works E465335 entity
Predicate produced P490 FINISHED
Object GWR Castle class locomotives
GWR Castle class locomotives were a celebrated class of Great Western Railway 4-6-0 steam engines renowned for their power, speed, and express passenger service performance in the mid-20th century UK rail network.
E1355352 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: GWR Castle class locomotives | Statement: [Swindon Works, produced, GWR Castle class locomotives]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: GWR Castle class locomotives
Context triple: [Swindon Works, produced, GWR Castle class locomotives]
  • A. GWR Hall Class
    The GWR Hall Class was a highly successful class of mixed-traffic 4-6-0 steam locomotives designed by Charles Collett for the Great Western Railway in the UK, renowned for their versatility and reliability.
  • B. BR Standard Class steam locomotives
    BR Standard Class steam locomotives were a series of steam engines designed and built in the 1950s for British Railways to standardize and modernize its steam fleet in the final years before diesel and electric traction took over.
  • C. BR Standard Class 4 steam locomotives
    BR Standard Class 4 steam locomotives are mid-20th-century British Railways mixed-traffic steam engines designed for versatility and efficiency on both passenger and freight services.
  • D. LMS Stanier Class 5 4-6-0 "Black Five" locomotives
    The LMS Stanier Class 5 4-6-0 "Black Five" locomotives are a highly successful and versatile class of British mixed-traffic steam engines designed by William Stanier for the London, Midland and Scottish Railway in the 1930s.
  • E. LMS Coronation Class
    The LMS Coronation Class was a fleet of powerful British express passenger steam locomotives built for the London, Midland and Scottish Railway in the 1930s, renowned for their streamlined design and high-speed performance.
  • 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: GWR Castle class locomotives
Triple: [Swindon Works, produced, GWR Castle class locomotives]
Generated description
GWR Castle class locomotives were a celebrated class of Great Western Railway 4-6-0 steam engines renowned for their power, speed, and express passenger service performance in the mid-20th century UK rail network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: GWR Castle class locomotives
Target entity description: GWR Castle class locomotives were a celebrated class of Great Western Railway 4-6-0 steam engines renowned for their power, speed, and express passenger service performance in the mid-20th century UK rail network.
  • A. GWR Hall Class
    The GWR Hall Class was a highly successful class of mixed-traffic 4-6-0 steam locomotives designed by Charles Collett for the Great Western Railway in the UK, renowned for their versatility and reliability.
  • B. BR Standard Class steam locomotives
    BR Standard Class steam locomotives were a series of steam engines designed and built in the 1950s for British Railways to standardize and modernize its steam fleet in the final years before diesel and electric traction took over.
  • C. BR Standard Class 4 steam locomotives
    BR Standard Class 4 steam locomotives are mid-20th-century British Railways mixed-traffic steam engines designed for versatility and efficiency on both passenger and freight services.
  • D. LMS Stanier Class 5 4-6-0 "Black Five" locomotives
    The LMS Stanier Class 5 4-6-0 "Black Five" locomotives are a highly successful and versatile class of British mixed-traffic steam engines designed by William Stanier for the London, Midland and Scottish Railway in the 1930s.
  • E. LMS Coronation Class
    The LMS Coronation Class was a fleet of powerful British express passenger steam locomotives built for the London, Midland and Scottish Railway in the 1930s, renowned for their streamlined design and high-speed performance.
  • 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_69d8dd025c188190a1d81f5b4ec7e2c6 completed April 10, 2026, 11:20 a.m.
NER Named-entity recognition batch_69e5d6d9f2a081908c0e923809da88e2 completed April 20, 2026, 7:33 a.m.
NED1 Entity disambiguation (via context triple) batch_6a05be4e6e048190b5b0050b90a4ce04 completed May 14, 2026, 12:21 p.m.
NEDg Description generation batch_6a05bf11e17c81909ccc56bd6337d524 completed May 14, 2026, 12:24 p.m.
NED2 Entity disambiguation (via description) batch_6a05bf9b18788190aae5a577b8f725fc completed May 14, 2026, 12:27 p.m.
Created at: April 10, 2026, 12:02 p.m.