Triple

T20050899
Position Surface form Disambiguated ID Type / Status
Subject Northwick Park station E499193 entity
Predicate lineSection P43954 FINISHED
Object Metropolitan line Uxbridge branch
The Metropolitan line Uxbridge branch is a suburban section of the London Underground’s Metropolitan line that runs between central London and Uxbridge, serving several northwest London boroughs.
E1408153 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: Metropolitan line Uxbridge branch | Statement: [Northwick Park station, lineSection, Metropolitan line Uxbridge branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Metropolitan line Uxbridge branch
Context triple: [Northwick Park station, lineSection, Metropolitan line Uxbridge branch]
  • A. West London line
    The West London line is a north–south railway route in west London that connects Willesden Junction to Clapham Junction, used by both London Overground and other train operators.
  • B. Hampstead & Highgate line
    The Hampstead & Highgate line was an early deep-level London Underground route in north London that later became part of the Northern line.
  • C. Holborn Viaduct–Herne Hill line
    The Holborn Viaduct–Herne Hill line is a suburban railway route in London that connects the City with south London, historically forming part of key commuter services into central London.
  • D. North London line
    The North London line is a key orbital railway route in London that runs across the northern part of the city, connecting numerous suburban areas and major interchange stations.
  • E. Hounslow Loop Line
    The Hounslow Loop Line is a suburban railway route in West London that forms a loop off the South Western Main Line, providing local passenger services through areas such as Hounslow, Isleworth, and Richmond.
  • 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: Metropolitan line Uxbridge branch
Triple: [Northwick Park station, lineSection, Metropolitan line Uxbridge branch]
Generated description
The Metropolitan line Uxbridge branch is a suburban section of the London Underground’s Metropolitan line that runs between central London and Uxbridge, serving several northwest London boroughs.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Metropolitan line Uxbridge branch
Target entity description: The Metropolitan line Uxbridge branch is a suburban section of the London Underground’s Metropolitan line that runs between central London and Uxbridge, serving several northwest London boroughs.
  • A. West London line
    The West London line is a north–south railway route in west London that connects Willesden Junction to Clapham Junction, used by both London Overground and other train operators.
  • B. Hampstead & Highgate line
    The Hampstead & Highgate line was an early deep-level London Underground route in north London that later became part of the Northern line.
  • C. Holborn Viaduct–Herne Hill line
    The Holborn Viaduct–Herne Hill line is a suburban railway route in London that connects the City with south London, historically forming part of key commuter services into central London.
  • D. North London line
    The North London line is a key orbital railway route in London that runs across the northern part of the city, connecting numerous suburban areas and major interchange stations.
  • E. Hounslow Loop Line
    The Hounslow Loop Line is a suburban railway route in West London that forms a loop off the South Western Main Line, providing local passenger services through areas such as Hounslow, Isleworth, and Richmond.
  • 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_69da6276bcf48190aabbf279192a5fb4 completed April 11, 2026, 3:02 p.m.
NER Named-entity recognition batch_69e6632d9d888190b0985bb5ed989311 completed April 20, 2026, 5:32 p.m.
NED1 Entity disambiguation (via context triple) batch_6a081607e4988190838907e8bce1ee3e completed May 16, 2026, 7 a.m.
NEDg Description generation batch_6a081691dcfc8190b41040341d99a9c9 completed May 16, 2026, 7:02 a.m.
NED2 Entity disambiguation (via description) batch_6a08171724cc81908d6997dbae84ad9e completed May 16, 2026, 7:04 a.m.
Created at: April 11, 2026, 3:38 p.m.