Triple

T21742043
Position Surface form Disambiguated ID Type / Status
Subject Kempton Park railway station E536680 entity
Predicate formerOperator P179 FINISHED
Object South West Trains
South West Trains was a major British train operating company that ran commuter and regional passenger services across southwest London and southern England until 2017.
 E1502360 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 | Statement: [Kempton Park railway station, formerOperator, South West Trains]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: South West Trains
Context triple: [Kempton Park railway station, formerOperator, South West Trains]
  • A. North West Trains
    North West Trains was a British train operating company that ran regional and commuter rail services in North West England following rail privatization in the mid-1990s.
  • B. 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.
  • C. South Eastern Trains
    South Eastern Trains was a British train operating company that ran commuter and regional passenger services in southeast England in the early 2000s.
  • D. Thames Trains
    Thames Trains was a former British train operating company that provided regional and commuter rail services in the Thames Valley area of England in the late 1990s and early 2000s.
  • E. 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.
  • 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
Triple: [Kempton Park railway station, formerOperator, South West Trains]
Generated description
South West Trains was a major British train operating company that ran commuter and regional passenger services across southwest London and southern England until 2017.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: South West Trains
Target entity description: South West Trains was a major British train operating company that ran commuter and regional passenger services across southwest London and southern England until 2017.
  • A. North West Trains
    North West Trains was a British train operating company that ran regional and commuter rail services in North West England following rail privatization in the mid-1990s.
  • B. 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.
  • C. South Eastern Trains
    South Eastern Trains was a British train operating company that ran commuter and regional passenger services in southeast England in the early 2000s.
  • D. Thames Trains
    Thames Trains was a former British train operating company that provided regional and commuter rail services in the Thames Valley area of England in the late 1990s and early 2000s.
  • E. 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.
  • 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_69e0c46df5448190b4322127ffc4c690 completed April 16, 2026, 11:13 a.m.
NER Named-entity recognition batch_69f01a7322348190b2145fa922c480ed completed April 28, 2026, 2:24 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0a3e663bd88190bc75a62848a9fb57 completed May 17, 2026, 10:17 p.m.
NEDg Description generation batch_6a0a3f0745b0819084e481b0b3cdf011 completed May 17, 2026, 10:19 p.m.
NED2 Entity disambiguation (via description) batch_6a0a3fbeace48190874b808fd94d9e3c completed May 17, 2026, 10:22 p.m.
Created at: April 16, 2026, 6:49 p.m.