Triple

T2790322
Position Surface form Disambiguated ID Type / Status
Subject Northern line E61912 entity
Predicate formedByMergerOf P77 FINISHED
Object Charing Cross, Euston and Hampstead Railway E298519 NE FINISHED

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: Charing Cross, Euston and Hampstead Railway | Statement: [Northern line, formedByMergerOf, Charing Cross, Euston and Hampstead Railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Charing Cross, Euston and Hampstead Railway
Context triple: [Northern line, formedByMergerOf, Charing Cross, Euston and Hampstead Railway]
  • A. Charing Cross, Euston and Hampstead Railway chosen
    The Charing Cross, Euston and Hampstead Railway was an early deep-level “tube” railway in London that later became a core part of the London Underground’s Northern line.
  • B. North London Railway
    The North London Railway was a British railway company that operated suburban and freight services across north London during the 19th and early 20th centuries.
  • C. Central London Railway
    Central London Railway was an early deep-level underground railway in London that later became the core of the London Underground's Central line.
  • D. Metropolitan Railway
    The Metropolitan Railway was the pioneering underground railway in London and the world’s first urban underground passenger railway, forming the core of what became the London Underground.
  • E. London and Greenwich Railway
    The London and Greenwich Railway was one of the earliest passenger railways in London and the first in the capital to be built on a viaduct, forming a key part of the city's early rail infrastructure.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69ab4b7f51d881908768300ebd2fbdae completed March 6, 2026, 9:47 p.m.
NER Named-entity recognition batch_69abddb4ef3081909122840a357801bf completed March 7, 2026, 8:11 a.m.
NED1 Entity disambiguation (via context triple) batch_69afce8e2c488190a63332f36803c295 completed March 10, 2026, 7:55 a.m.
Created at: March 6, 2026, 9:58 p.m.