Triple

T11943351
Position Surface form Disambiguated ID Type / Status
Subject Northumberland Park Depot E284231 entity
Predicate servesRollingStock P5426 FINISHED
Object Victoria line 2009 Stock
The Victoria line 2009 Stock is a modern fleet of London Underground trains built for the Victoria line, featuring air-conditioned, walk-through carriages and advanced traction and control systems.
E955197 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: Victoria line 2009 Stock | Statement: [Northumberland Park Depot, servesRollingStock, Victoria line 2009 Stock]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Victoria line 2009 Stock
Context triple: [Northumberland Park Depot, servesRollingStock, Victoria line 2009 Stock]
  • A. Victoria line
    The Victoria line is a deep-level, high-frequency London Underground route running north–south across central London and known for being one of the network’s fastest and most heavily used lines.
  • B. 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.
  • C. London Underground S8 Stock
    The London Underground S8 Stock is a modern fleet of air-conditioned, walk-through electric multiple units used on the Metropolitan line, designed to increase capacity and improve passenger comfort and accessibility.
  • D. Southend Victoria line
    The Southend Victoria line is a suburban railway route in Essex, England, connecting London Liverpool Street with Southend Victoria and serving communities along the Great Eastern network.
  • E. Metro Line
    The Metro Line is a light rail transit route in Edmonton, Alberta, serving key destinations such as the city’s downtown and major educational and health institutions.
  • 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: Victoria line 2009 Stock
Triple: [Northumberland Park Depot, servesRollingStock, Victoria line 2009 Stock]
Generated description
The Victoria line 2009 Stock is a modern fleet of London Underground trains built for the Victoria line, featuring air-conditioned, walk-through carriages and advanced traction and control systems.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Victoria line 2009 Stock
Target entity description: The Victoria line 2009 Stock is a modern fleet of London Underground trains built for the Victoria line, featuring air-conditioned, walk-through carriages and advanced traction and control systems.
  • A. Victoria line
    The Victoria line is a deep-level, high-frequency London Underground route running north–south across central London and known for being one of the network’s fastest and most heavily used lines.
  • B. 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.
  • C. London Underground S8 Stock
    The London Underground S8 Stock is a modern fleet of air-conditioned, walk-through electric multiple units used on the Metropolitan line, designed to increase capacity and improve passenger comfort and accessibility.
  • D. Southend Victoria line
    The Southend Victoria line is a suburban railway route in Essex, England, connecting London Liverpool Street with Southend Victoria and serving communities along the Great Eastern network.
  • E. Metro Line
    The Metro Line is a light rail transit route in Edmonton, Alberta, serving key destinations such as the city’s downtown and major educational and health institutions.
  • 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_69d6ab2db38c8190b1f0ed6663ef8ada completed April 8, 2026, 7:23 p.m.
NER Named-entity recognition batch_69d9034444488190925a6fa6c856ed08 completed April 10, 2026, 2:03 p.m.
NED1 Entity disambiguation (via context triple) batch_69f440a5a9c8819086a94ad60c6881b8 completed May 1, 2026, 5:56 a.m.
NEDg Description generation batch_69f448fd4b908190a4f08619d346bec8 completed May 1, 2026, 6:32 a.m.
NED2 Entity disambiguation (via description) batch_69f44b08da6c8190ae62d8e892bf1971 completed May 1, 2026, 6:41 a.m.
Created at: April 8, 2026, 9:45 p.m.