Triple

T5493734
Position Surface form Disambiguated ID Type / Status
Subject British Rail Class 158 E123762 entity
Predicate operator P179 FINISHED
Object South West Trains (past)
South West Trains was a former British train operating company that ran commuter and regional passenger services in southwest London and across southern England until its franchise ended in 2017.
E77673 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: South West Trains (past) | Statement: [British Rail Class 158, operator, South West Trains (past)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: South West Trains (past)
Context triple: [British Rail Class 158, operator, South West Trains (past)]
  • A. South Western Railway
    South Western Railway is a zone of Indian Railways responsible for operating and managing rail services primarily across the state of Karnataka and parts of its neighboring regions.
  • B. South Western Railway
    South Western Railway is a major UK train operating company providing regional and long-distance passenger rail services across southwest London, Surrey, Hampshire, Dorset, Wiltshire, Devon, and surrounding areas.
  • C. Virgin Trains
    Virgin Trains was a British train operating company under Richard Branson’s Virgin Group brand that ran long-distance passenger rail services in the UK.
  • D. Northern Trains
    Northern Trains is a British train operating company that runs local and regional passenger rail services across Northern England.
  • E. Northern Rail
    Northern Rail is a British train operating company providing regional and commuter rail services across Northern England.
  • 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: South West Trains (past)
Triple: [British Rail Class 158, operator, South West Trains (past)]
Generated description
South West Trains was a former British train operating company that ran commuter and regional passenger services in southwest London and across southern England until its franchise ended in 2017.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: South West Trains (past)
Target entity description: South West Trains was a former British train operating company that ran commuter and regional passenger services in southwest London and across southern England until its franchise ended in 2017.
  • A. South Western Railway
    South Western Railway is a zone of Indian Railways responsible for operating and managing rail services primarily across the state of Karnataka and parts of its neighboring regions.
  • B. South Western Railway chosen
    South Western Railway is a major UK train operating company providing regional and long-distance passenger rail services across southwest London, Surrey, Hampshire, Dorset, Wiltshire, Devon, and surrounding areas.
  • C. Virgin Trains
    Virgin Trains was a British train operating company under Richard Branson’s Virgin Group brand that ran long-distance passenger rail services in the UK.
  • D. Northern Trains
    Northern Trains is a British train operating company that runs local and regional passenger rail services across Northern England.
  • E. Northern Rail
    Northern Rail is a British train operating company providing regional and commuter rail services across Northern England.
  • 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_69bd464a2d908190869324ce176779c8 completed March 20, 2026, 1:06 p.m.
NER Named-entity recognition batch_69bd9281a0148190bb7a8dae9c991b9c completed March 20, 2026, 6:31 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf6c95ba008190ad61e1d31ae38d98 completed March 22, 2026, 4:14 a.m.
NEDg Description generation batch_69bf6d14c5888190901d1fa161a0b291 completed March 22, 2026, 4:16 a.m.
NED2 Entity disambiguation (via description) batch_69bf6d7f1498819086271181a028dc0e completed March 22, 2026, 4:18 a.m.
Created at: March 20, 2026, 2:10 p.m.