Triple

T8881506
Position Surface form Disambiguated ID Type / Status
Subject LNER Class P2 E211420 entity
Predicate rebuiltAs P4143 FINISHED
Object LNER Class A2/2
The LNER Class A2/2 was a small group of British express steam locomotives rebuilt by Sir Nigel Gresley’s successor Edward Thompson from the original P2 class for improved route availability and standardization on the London and North Eastern Railway.
E211420 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 A2/2 | Statement: [LNER Class P2, rebuiltAs, LNER Class A2/2]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: LNER Class A2/2
Context triple: [LNER Class P2, rebuiltAs, LNER Class A2/2]
  • 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 P2
    The LNER Class P2 was a powerful class of 2-8-2 steam locomotives designed by Sir Nigel Gresley for hauling heavy express trains on the challenging Edinburgh–Aberdeen route in the 1930s.
  • C. 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.
  • D. 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.
  • E. LNER Class V2
    The LNER Class V2 was a class of powerful 2-6-2 steam locomotives designed by Sir Nigel Gresley for mixed-traffic duties on the London and North Eastern Railway in the mid-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 A2/2
Triple: [LNER Class P2, rebuiltAs, LNER Class A2/2]
Generated description
The LNER Class A2/2 was a small group of British express steam locomotives rebuilt by Sir Nigel Gresley’s successor Edward Thompson from the original P2 class for improved route availability and standardization on the London and North Eastern Railway.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: LNER Class A2/2
Target entity description: The LNER Class A2/2 was a small group of British express steam locomotives rebuilt by Sir Nigel Gresley’s successor Edward Thompson from the original P2 class for improved route availability and standardization 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 P2 chosen
    The LNER Class P2 was a powerful class of 2-8-2 steam locomotives designed by Sir Nigel Gresley for hauling heavy express trains on the challenging Edinburgh–Aberdeen route in the 1930s.
  • C. 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.
  • D. 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.
  • E. LNER Class V2
    The LNER Class V2 was a class of powerful 2-6-2 steam locomotives designed by Sir Nigel Gresley for mixed-traffic duties on the London and North Eastern Railway in the mid-20th century.
  • F. None of above.

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_69ca838f9e20819096ab1f236a70381a completed March 30, 2026, 2:07 p.m.
NER Named-entity recognition batch_69cc6168e3d881908c58cf11cf5f9a0e completed April 1, 2026, 12:06 a.m.
NED1 Entity disambiguation (via context triple) batch_69cfabca74888190934593d6504fbed1 completed April 3, 2026, noon
NEDg Description generation batch_69cfac9c743c8190a26f753111f07281 completed April 3, 2026, 12:03 p.m.
NED2 Entity disambiguation (via description) batch_69cfad54cf5c81908558fd4c21f2f3b6 completed April 3, 2026, 12:06 p.m.
Created at: March 30, 2026, 6:53 p.m.