Triple

T2866159
Position Surface form Disambiguated ID Type / Status
Subject Piccadilly Circus Underground station E63442 entity
Predicate openedBy P421 FINISHED
Object Baker Street and Waterloo Railway
The Baker Street and Waterloo Railway was one of London's early deep-level tube railways, later incorporated into the Bakerloo line of the London Underground.
E305908 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: Baker Street and Waterloo Railway | Statement: [Piccadilly Circus Underground station, openedBy, Baker Street and Waterloo Railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Baker Street and Waterloo Railway
Context triple: [Piccadilly Circus Underground station, openedBy, Baker Street and Waterloo Railway]
  • A. Baker Street station
    Baker Street station is a historic London Underground station in central London, famously associated with Sherlock Holmes and serving multiple tube lines.
  • B. 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.
  • C. Edgware branch
    The Edgware branch is a northern suburban section of the London Underground’s Northern line running from central London to Edgware.
  • 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. Piccadilly line
    The Piccadilly line is a major deep-level London Underground route running from the north and west suburbs through central London, serving key destinations including Heathrow Airport.
  • 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: Baker Street and Waterloo Railway
Triple: [Piccadilly Circus Underground station, openedBy, Baker Street and Waterloo Railway]
Generated description
The Baker Street and Waterloo Railway was one of London's early deep-level tube railways, later incorporated into the Bakerloo line of the London Underground.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Baker Street and Waterloo Railway
Target entity description: The Baker Street and Waterloo Railway was one of London's early deep-level tube railways, later incorporated into the Bakerloo line of the London Underground.
  • A. Baker Street station
    Baker Street station is a historic London Underground station in central London, famously associated with Sherlock Holmes and serving multiple tube lines.
  • B. 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.
  • C. Edgware branch
    The Edgware branch is a northern suburban section of the London Underground’s Northern line running from central London to Edgware.
  • 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. Piccadilly line
    The Piccadilly line is a major deep-level London Underground route running from the north and west suburbs through central London, serving key destinations including Heathrow Airport.
  • 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_69ab4c42fb8c8190b36e161d47c03b81 completed March 6, 2026, 9:50 p.m.
NER Named-entity recognition batch_69abdfbb7ed4819096ca65391077e2af completed March 7, 2026, 8:20 a.m.
NED1 Entity disambiguation (via context triple) batch_69b01da85930819092d19a5e712cfa18 completed March 10, 2026, 1:33 p.m.
NEDg Description generation batch_69b01e34639c8190b1c6e8a14cd31d96 completed March 10, 2026, 1:35 p.m.
NED2 Entity disambiguation (via description) batch_69b01f5a6784819089499926fb115d9c completed March 10, 2026, 1:40 p.m.
Created at: March 6, 2026, 10:02 p.m.