Triple

T20050906
Position Surface form Disambiguated ID Type / Status
Subject Northwick Park station E499193 entity
Predicate locatedOn P40 FINISHED
Object Metropolitan line between Harrow-on-the-Hill and Preston Road — NE NERFINISHED

How this triple was built (2 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 between Harrow-on-the-Hill and Preston Road | Statement: [Northwick Park station, locatedOn, Metropolitan line between Harrow-on-the-Hill and Preston Road]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Metropolitan line between Harrow-on-the-Hill and Preston Road
Context triple: [Northwick Park station, locatedOn, Metropolitan line between Harrow-on-the-Hill and Preston Road]
  • A. Metropolitan line between Aldgate and Chesham
    The Metropolitan line between Aldgate and Chesham is a long-distance London Underground route that runs from the City of London through northwest suburbs into Buckinghamshire, combining urban metro and semi-rural commuter rail characteristics.
  • B. 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.
  • C. Metropolitan line branch to Chesham
    The Metropolitan line branch to Chesham is a rural outer-suburban spur of the London Underground’s Metropolitan line, running from Chalfont & Latimer to serve the town of Chesham in Buckinghamshire.
  • D. Metropolitan line chosen
    The Metropolitan line is one of the oldest lines of the London Underground, running from central London into the northwestern suburbs and beyond.
  • E. Liverpool Street to Enfield Town line
    The Liverpool Street to Enfield Town line is a suburban commuter rail route in North and East London that runs from London Liverpool Street to Enfield Town as part of the Lea Valley rail network.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 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.
Created at: April 11, 2026, 3:38 p.m.