Triple

T2377918
Position Surface form Disambiguated ID Type / Status
Subject Heathrow Express E46241 entity
Predicate rollingStock P1305 FINISHED
Object 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.
E264428 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 332 | Statement: [Heathrow Express, rollingStock, British Rail Class 332]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: British Rail Class 332
Context triple: [Heathrow Express, rollingStock, British Rail Class 332]
  • A. 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.
  • B. 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.
  • C. 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.
  • 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 168
    The British Rail Class 168 is a diesel multiple-unit train used primarily by Chiltern Railways for regional and intercity services in the United Kingdom.
  • 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 332
Triple: [Heathrow Express, rollingStock, British Rail Class 332]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: British Rail Class 332
Target entity description: 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.
  • A. 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.
  • B. 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.
  • C. 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.
  • 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 168
    The British Rail Class 168 is a diesel multiple-unit train used primarily by Chiltern Railways for regional and intercity services in the United Kingdom.
  • 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_69a88a1554a48190a0180682bcf099be completed March 4, 2026, 7:37 p.m.
NER Named-entity recognition batch_69abc79610e8819084abfbccd1dc67c0 completed March 7, 2026, 6:37 a.m.
NED1 Entity disambiguation (via context triple) batch_69aebf3294d88190be67aa4cca72bbb4 completed March 9, 2026, 12:38 p.m.
NEDg Description generation batch_69aec2c1c0148190a5eb8fbfa452dd79 completed March 9, 2026, 12:53 p.m.
NED2 Entity disambiguation (via description) batch_69aec34a9a0481908c1033cb7d4b1516 completed March 9, 2026, 12:55 p.m.
Created at: March 4, 2026, 7:57 p.m.