Triple

T5843284
Position Surface form Disambiguated ID Type / Status
Subject Charles T. Yerkes E129644 entity
Predicate employer P7 FINISHED
Object Metropolitan District Railway (London) E316454 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: Metropolitan District Railway (London) | Statement: [Charles T. Yerkes, employer, Metropolitan District Railway (London)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Metropolitan District Railway (London)
Context triple: [Charles T. Yerkes, employer, Metropolitan District Railway (London)]
  • A. Metropolitan District Railway chosen
    The Metropolitan District Railway was a historic London railway company that developed much of what is now the District line of the London Underground in the late 19th and early 20th centuries.
  • B. 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.
  • 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. City and South London Railway
    The City and South London Railway was the world's first deep-level electric tube railway in London, forming a key precursor to today's Northern line of the London Underground.
  • E. Charing Cross, Euston and Hampstead Railway
    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.
  • 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_69c0084bd31c8190a796bb6284845e83 completed March 22, 2026, 3:18 p.m.
NER Named-entity recognition batch_69c034d9da0c8190970319d0dc2fc73f completed March 22, 2026, 6:28 p.m.
NED1 Entity disambiguation (via context triple) batch_69c0a1a6587c8190b76b1005178c29a9 completed March 23, 2026, 2:12 a.m.
Created at: March 22, 2026, 3:54 p.m.