Triple

T2310141
Position Surface form Disambiguated ID Type / Status
Subject East Lancashire Railway E51934 entity
Predicate hasNotableDieselClass P4856 FINISHED
Object British Rail Class 50
The British Rail Class 50 is a class of powerful diesel-electric locomotives built in the late 1960s for high-speed passenger services on the British railway network, particularly on the West Coast Main Line.
 E261993 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: British Rail Class 50 | Statement: [East Lancashire Railway, hasNotableDieselClass, British Rail Class 50]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 50
Context triple: [East Lancashire Railway, hasNotableDieselClass, British Rail Class 50]
  • A. British Rail Class 37
    The British Rail Class 37 is a class of diesel-electric locomotives introduced in the early 1960s, renowned for their distinctive growling engine sound and long service life across the UK rail network.
  • B. British Rail Class 47
    The British Rail Class 47 is a widely used diesel-electric locomotive class introduced in the 1960s, notable for its extensive service across the UK rail network with both passenger and freight trains.
  • C. British Rail Class 40
    The British Rail Class 40 is a class of heavy diesel-electric locomotives built in the late 1950s and early 1960s for express passenger and freight services on British Railways, now preserved and operated on heritage lines.
  • D. British Rail Class 373
    The British Rail Class 373 is a high-speed electric multiple unit train designed for cross-Channel services through the Channel Tunnel, primarily operated by Eurostar between the UK and mainland Europe.
  • E. British Rail Class 377
    The British Rail Class 377 is a fleet of electric multiple-unit commuter trains widely used in southeast England, particularly by Govia Thameslink Railway services.
  • 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: British Rail Class 50
Triple: [East Lancashire Railway, hasNotableDieselClass, British Rail Class 50]
Generated description
The British Rail Class 50 is a class of powerful diesel-electric locomotives built in the late 1960s for high-speed passenger services on the British railway network, particularly on the West Coast Main Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 50
Target entity description: The British Rail Class 50 is a class of powerful diesel-electric locomotives built in the late 1960s for high-speed passenger services on the British railway network, particularly on the West Coast Main Line.
  • A. British Rail Class 37
    The British Rail Class 37 is a class of diesel-electric locomotives introduced in the early 1960s, renowned for their distinctive growling engine sound and long service life across the UK rail network.
  • B. British Rail Class 47
    The British Rail Class 47 is a widely used diesel-electric locomotive class introduced in the 1960s, notable for its extensive service across the UK rail network with both passenger and freight trains.
  • C. British Rail Class 40
    The British Rail Class 40 is a class of heavy diesel-electric locomotives built in the late 1950s and early 1960s for express passenger and freight services on British Railways, now preserved and operated on heritage lines.
  • D. British Rail Class 373
    The British Rail Class 373 is a high-speed electric multiple unit train designed for cross-Channel services through the Channel Tunnel, primarily operated by Eurostar between the UK and mainland Europe.
  • E. British Rail Class 377
    The British Rail Class 377 is a fleet of electric multiple-unit commuter trains widely used in southeast England, particularly by Govia Thameslink Railway services.
  • 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_69a88b0bb30c81908ded03b006d29387 completed March 4, 2026, 7:42 p.m.
NER Named-entity recognition batch_69abd0d6b0e48190aee9131ca182e52f completed March 7, 2026, 7:16 a.m.
NED1 Entity disambiguation (via context triple) batch_69aeb3bbea88819089f069be4d369692 completed March 9, 2026, 11:49 a.m.
NEDg Description generation batch_69aeb46f882881909294a3698ead865e completed March 9, 2026, 11:52 a.m.
NED2 Entity disambiguation (via description) batch_69aeb4c715a88190b1009a2cf1d95441 completed March 9, 2026, 11:53 a.m.
Created at: March 4, 2026, 7:49 p.m.