Triple

T5313812
Position Surface form Disambiguated ID Type / Status
Subject Voyager family E119095 entity
Predicate nonTiltingSubclass P26477 FINISHED
Object British Rail Class 222 Meridian
The British Rail Class 222 Meridian is a high-speed diesel-electric multiple unit train used in the UK for intercity services, known for its modern design, improved passenger comfort, and performance on routes such as those operated by East Midlands Railway.
E522625 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 222 Meridian | Statement: [Voyager family, nonTiltingSubclass, British Rail Class 222 Meridian]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: British Rail Class 222 Meridian
Context triple: [Voyager family, nonTiltingSubclass, British Rail Class 222 Meridian]
  • A. British Rail Class 221 Super Voyager
    The British Rail Class 221 Super Voyager is a high-speed tilting diesel-electric multiple unit train used in the UK for intercity services, particularly on long-distance routes.
  • B. British Rail Class 323
    The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
  • C. British Rail Class 172
    The British Rail Class 172 is a diesel multiple-unit train used on regional and suburban services in the UK, featuring improved performance, reliability, and passenger comfort over earlier Turbostar units.
  • D. British Rail Class 332
    The British Rail Class 332 is an electric multiple unit train type built in the late 1990s specifically for high-speed, premium passenger services between London Paddington and Heathrow Airport.
  • E. 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.
  • 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 222 Meridian
Triple: [Voyager family, nonTiltingSubclass, British Rail Class 222 Meridian]
Generated description
The British Rail Class 222 Meridian is a high-speed diesel-electric multiple unit train used in the UK for intercity services, known for its modern design, improved passenger comfort, and performance on routes such as those operated by East Midlands Railway.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: British Rail Class 222 Meridian
Target entity description: The British Rail Class 222 Meridian is a high-speed diesel-electric multiple unit train used in the UK for intercity services, known for its modern design, improved passenger comfort, and performance on routes such as those operated by East Midlands Railway.
  • A. British Rail Class 221 Super Voyager
    The British Rail Class 221 Super Voyager is a high-speed tilting diesel-electric multiple unit train used in the UK for intercity services, particularly on long-distance routes.
  • B. British Rail Class 323
    The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
  • C. British Rail Class 172
    The British Rail Class 172 is a diesel multiple-unit train used on regional and suburban services in the UK, featuring improved performance, reliability, and passenger comfort over earlier Turbostar units.
  • D. British Rail Class 332
    The British Rail Class 332 is an electric multiple unit train type built in the late 1990s specifically for high-speed, premium passenger services between London Paddington and Heathrow Airport.
  • E. 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.
  • 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_69bd446b57bc8190a513d2e6c40314f3 completed March 20, 2026, 12:58 p.m.
NER Named-entity recognition batch_69bd91aab9348190a373b30bb305f933 completed March 20, 2026, 6:27 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf4871c22c8190986f12c2783f315a completed March 22, 2026, 1:40 a.m.
NEDg Description generation batch_69bf49d0ec4881908e835642e2e20cc9 completed March 22, 2026, 1:45 a.m.
NED2 Entity disambiguation (via description) batch_69bf4a2c4748819080df9bb468fd9198 completed March 22, 2026, 1:47 a.m.
Created at: March 20, 2026, 1:54 p.m.