Triple

T12314444
Position Surface form Disambiguated ID Type / Status
Subject 1972 Stock E293563 entity
Predicate plannedReplacementBy P36091 FINISHED
Object new Bakerloo line tube stock (future replacement programme)
The new Bakerloo line tube stock is a forthcoming generation of London Underground trains being developed to modernize and eventually replace the ageing 1972 Stock on the Bakerloo line.
E976035 NE FINISHED

How this triple was built (5 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: new Bakerloo line tube stock (future replacement programme) | Statement: [1972 Stock, plannedReplacementBy, new Bakerloo line tube stock (future replacement programme)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: new Bakerloo line tube stock (future replacement programme)
Context triple: [1972 Stock, plannedReplacementBy, new Bakerloo line tube stock (future replacement programme)]
  • A. Jubilee line extension
    The Jubilee line extension is a major late-20th-century expansion of the London Underground that introduced new stations and modern infrastructure to connect central London with the Docklands and east London.
  • B. New Tube for London (planned for Central line)
    New Tube for London (planned for Central line) is a forthcoming generation of deep-level London Underground trains designed to modernize the Central line with improved capacity, efficiency, and passenger comfort.
  • C. London Underground 1992 Stock
    The London Underground 1992 Stock is a fleet of electric multiple unit trains primarily used on the Central line, known for introducing modern traction and passenger features to the deep-level Tube network in the early 1990s.
  • D. Elizabeth line (Abbey Wood branch)
    The Elizabeth line (Abbey Wood branch) is a key Crossrail route in southeast London, providing high-frequency, fast rail services between Abbey Wood, central London, and beyond.
  • E. Bakerloo line
    The Bakerloo line is a deep-level London Underground railway line running between Harrow & Wealdstone in northwest London and Elephant & Castle in south London, known for serving key central locations such as Baker Street, Oxford Circus, and Waterloo.
  • 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: new Bakerloo line tube stock (future replacement programme)
Triple: [1972 Stock, plannedReplacementBy, new Bakerloo line tube stock (future replacement programme)]
Generated description
The new Bakerloo line tube stock is a forthcoming generation of London Underground trains being developed to modernize and eventually replace the ageing 1972 Stock on the Bakerloo line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: new Bakerloo line tube stock (future replacement programme)
Target entity description: The new Bakerloo line tube stock is a forthcoming generation of London Underground trains being developed to modernize and eventually replace the ageing 1972 Stock on the Bakerloo line.
  • A. Jubilee line extension
    The Jubilee line extension is a major late-20th-century expansion of the London Underground that introduced new stations and modern infrastructure to connect central London with the Docklands and east London.
  • B. New Tube for London (planned for Central line)
    New Tube for London (planned for Central line) is a forthcoming generation of deep-level London Underground trains designed to modernize the Central line with improved capacity, efficiency, and passenger comfort.
  • C. London Underground 1992 Stock
    The London Underground 1992 Stock is a fleet of electric multiple unit trains primarily used on the Central line, known for introducing modern traction and passenger features to the deep-level Tube network in the early 1990s.
  • D. Elizabeth line (Abbey Wood branch)
    The Elizabeth line (Abbey Wood branch) is a key Crossrail route in southeast London, providing high-frequency, fast rail services between Abbey Wood, central London, and beyond.
  • E. Bakerloo line
    The Bakerloo line is a deep-level London Underground railway line running between Harrow & Wealdstone in northwest London and Elephant & Castle in south London, known for serving key central locations such as Baker Street, Oxford Circus, and Waterloo.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: plannedReplacementBy
Context triple: [1972 Stock, plannedReplacementBy, new Bakerloo line tube stock (future replacement programme)]
  • A. plannedReplacement chosen
    Indicates that one entity is intended or scheduled to be replaced by another entity in the future.
  • B. placedBy
    Indicates that one entity was positioned, set, or put in a location or context by another entity.
  • C. isPlannedToBeReplacedAsCapitalBy
    Indicates that one capital city is intended or scheduled to be superseded by another as the official capital.
  • D. replacementProject
    Indicates that one entity is a project intended to replace or supersede another entity or project.
  • E. mayBeReplacedBy
    Indicates that one entity can potentially be substituted or superseded by another entity.
  • F. None of above.

Provenance (6 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_69d6ab6a2b50819082f6aedd32ed608a completed April 8, 2026, 7:24 p.m.
NER Named-entity recognition batch_69d93f621570819091ee1db2609233ea completed April 10, 2026, 6:20 p.m.
NED1 Entity disambiguation (via context triple) batch_69f61e86d45881909a9a3c09df0b78f1 completed May 2, 2026, 3:55 p.m.
NEDg Description generation batch_69f622a646c481908164ae5387625bb4 completed May 2, 2026, 4:13 p.m.
NED2 Entity disambiguation (via description) batch_69f623fbb32081909b7daa515eebf75d completed May 2, 2026, 4:19 p.m.
PD Predicate disambiguation batch_69d93ec02c008190a56aae60a3d9eff6 completed April 10, 2026, 6:17 p.m.
Created at: April 8, 2026, 9:53 p.m.