Triple

T20316169
Position Surface form Disambiguated ID Type / Status
Subject BR Derby Works E510384 entity
Predicate designed P184 FINISHED
Object British Rail Class 20 — NE NERFINISHED

How this triple was built (3 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 20 | Statement: [BR Derby Works, designed, British Rail Class 20]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 20
Context triple: [BR Derby Works, designed, British Rail Class 20]
  • A. British Rail Class 221
    The British Rail Class 221 is a fleet of high-speed diesel-electric tilting multiple units used on intercity services in the UK, closely related to the Voyager family of trains.
  • 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 171
    The British Rail Class 171 is a diesel multiple unit train used primarily by Southern in the UK, closely related to the Class 170 but equipped with different coupling systems for compatibility with other Southern stock.
  • E. British Rail Class 720
    The British Rail Class 720 is a modern electric multiple unit train built for high-capacity commuter and regional services on the UK rail network.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 20
Target entity description: The British Rail Class 20 is a type of diesel-electric locomotive introduced in the late 1950s for freight and general-purpose duties on British Railways, noted for its distinctive single-cab design and reliability.
  • A. British Rail Class 221
    The British Rail Class 221 is a fleet of high-speed diesel-electric tilting multiple units used on intercity services in the UK, closely related to the Voyager family of trains.
  • 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 171
    The British Rail Class 171 is a diesel multiple unit train used primarily by Southern in the UK, closely related to the Class 170 but equipped with different coupling systems for compatibility with other Southern stock.
  • E. British Rail Class 720
    The British Rail Class 720 is a modern electric multiple unit train built for high-capacity commuter and regional services on the UK rail network.
  • F. None of above. chosen

Provenance (2 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_69e0b4c7491c8190961113c4283b10b0 completed April 16, 2026, 10:07 a.m.
NER Named-entity recognition batch_69e67787af188190bc32a3049c9c5b39 completed April 20, 2026, 6:59 p.m.
Created at: April 16, 2026, 11:19 a.m.