Triple

T9964122
Position Surface form Disambiguated ID Type / Status
Subject Doncaster Works E195637 entity
Predicate builtLocomotive P8940 FINISHED
Object LNER Class A4 4489 Dominion of Canada
LNER Class A4 4489 Dominion of Canada is a preserved streamlined express steam locomotive from the famous A4 class designed by Sir Nigel Gresley for high-speed passenger service on the London and North Eastern Railway.
E848641 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: LNER Class A4 4489 Dominion of Canada | Statement: [Doncaster Works, builtLocomotive, LNER Class A4 4489 Dominion of Canada]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: LNER Class A4 4489 Dominion of Canada
Context triple: [Doncaster Works, builtLocomotive, LNER Class A4 4489 Dominion of Canada]
  • A. LNER Class A4
    The LNER Class A4 is a class of streamlined British express steam locomotives designed by Sir Nigel Gresley, famed for their high-speed service and for producing Mallard, the world speed record holder for steam traction.
  • B. LNER Class A4 4468 Mallard
    LNER Class A4 4468 Mallard is a famous British steam locomotive best known for holding the world speed record for steam traction, set in 1938.
  • C. LNER Class A3 4472 Flying Scotsman
    LNER Class A3 4472 Flying Scotsman is a famous British steam locomotive renowned for being one of the world’s most iconic express passenger engines and the first to officially reach 100 mph.
  • D. LNER Class A3
    The LNER Class A3 was a famous class of British express steam locomotives, including the record-breaking Flying Scotsman, designed by Sir Nigel Gresley for high-speed mainline passenger service.
  • E. LNER Class A1
    The LNER Class A1 was a series of powerful British express passenger steam locomotives designed by Sir Nigel Gresley for high-speed mainline services in the early 20th century.
  • 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: LNER Class A4 4489 Dominion of Canada
Triple: [Doncaster Works, builtLocomotive, LNER Class A4 4489 Dominion of Canada]
Generated description
LNER Class A4 4489 Dominion of Canada is a preserved streamlined express steam locomotive from the famous A4 class designed by Sir Nigel Gresley for high-speed passenger service on the London and North Eastern Railway.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: LNER Class A4 4489 Dominion of Canada
Target entity description: LNER Class A4 4489 Dominion of Canada is a preserved streamlined express steam locomotive from the famous A4 class designed by Sir Nigel Gresley for high-speed passenger service on the London and North Eastern Railway.
  • A. LNER Class A4
    The LNER Class A4 is a class of streamlined British express steam locomotives designed by Sir Nigel Gresley, famed for their high-speed service and for producing Mallard, the world speed record holder for steam traction.
  • B. LNER Class A4 4468 Mallard
    LNER Class A4 4468 Mallard is a famous British steam locomotive best known for holding the world speed record for steam traction, set in 1938.
  • C. LNER Class A3 4472 Flying Scotsman
    LNER Class A3 4472 Flying Scotsman is a famous British steam locomotive renowned for being one of the world’s most iconic express passenger engines and the first to officially reach 100 mph.
  • D. LNER Class A3
    The LNER Class A3 was a famous class of British express steam locomotives, including the record-breaking Flying Scotsman, designed by Sir Nigel Gresley for high-speed mainline passenger service.
  • E. LNER Class A1
    The LNER Class A1 was a series of powerful British express passenger steam locomotives designed by Sir Nigel Gresley for high-speed mainline services in the early 20th century.
  • 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_69ca82ebd1288190912f9e4482d1fa35 completed March 30, 2026, 2:04 p.m.
NER Named-entity recognition batch_69cdb71a33b48190a18c1a9023f249d2 completed April 2, 2026, 12:23 a.m.
NED1 Entity disambiguation (via context triple) batch_69d369657ecc81909d0c710ca919602e completed April 6, 2026, 8:05 a.m.
NEDg Description generation batch_69d37540b60c8190a52b03c57b4e3708 completed April 6, 2026, 8:56 a.m.
NED2 Entity disambiguation (via description) batch_69d3763948188190a47f48076fc767cb completed April 6, 2026, 9 a.m.
Created at: March 30, 2026, 8:47 p.m.