Triple

T22141865
Position Surface form Disambiguated ID Type / Status
Subject Charterhouse Street E547177 entity
Predicate hasNearbyRailwayInfrastructure P231 FINISHED
Object Thameslink tunnels
The Thameslink tunnels are a key set of central London railway tunnels carrying Thameslink services north–south beneath the city, linking major mainline routes through underground sections.
E1522333 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: Thameslink tunnels | Statement: [Charterhouse Street, hasNearbyRailwayInfrastructure, Thameslink tunnels]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Thameslink tunnels
Context triple: [Charterhouse Street, hasNearbyRailwayInfrastructure, Thameslink tunnels]
  • A. Severn Tunnel
    Severn Tunnel is a major railway tunnel in the United Kingdom that runs beneath the River Severn, linking South West England with South Wales.
  • B. Limehouse Link Tunnel
    The Limehouse Link Tunnel is a major road tunnel in East London that provides a key underground route between the City and Docklands, easing traffic flow to and from Canary Wharf.
  • C. Reigate Tunnel
    Reigate Tunnel is a historic road tunnel in Reigate, Surrey, notable as one of the earliest road tunnels in Britain and now a distinctive local landmark.
  • D. Hindhead Tunnel
    Hindhead Tunnel is a major road tunnel in Surrey, England, carrying the A3 beneath the Devil’s Punch Bowl to improve traffic flow and reduce environmental impact on the surrounding countryside.
  • E. Dartford Tunnel
    The Dartford Tunnel is a major road tunnel under the River Thames in southeast England, forming part of a key river crossing on the London orbital route.
  • 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: Thameslink tunnels
Triple: [Charterhouse Street, hasNearbyRailwayInfrastructure, Thameslink tunnels]
Generated description
The Thameslink tunnels are a key set of central London railway tunnels carrying Thameslink services north–south beneath the city, linking major mainline routes through underground sections.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Thameslink tunnels
Target entity description: The Thameslink tunnels are a key set of central London railway tunnels carrying Thameslink services north–south beneath the city, linking major mainline routes through underground sections.
  • A. Severn Tunnel
    Severn Tunnel is a major railway tunnel in the United Kingdom that runs beneath the River Severn, linking South West England with South Wales.
  • B. Limehouse Link Tunnel
    The Limehouse Link Tunnel is a major road tunnel in East London that provides a key underground route between the City and Docklands, easing traffic flow to and from Canary Wharf.
  • C. Reigate Tunnel
    Reigate Tunnel is a historic road tunnel in Reigate, Surrey, notable as one of the earliest road tunnels in Britain and now a distinctive local landmark.
  • D. Hindhead Tunnel
    Hindhead Tunnel is a major road tunnel in Surrey, England, carrying the A3 beneath the Devil’s Punch Bowl to improve traffic flow and reduce environmental impact on the surrounding countryside.
  • E. Dartford Tunnel
    The Dartford Tunnel is a major road tunnel under the River Thames in southeast England, forming part of a key river crossing on the London orbital route.
  • 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_69e11e3a95d88190a3bd80d9471976c3 completed April 16, 2026, 5:36 p.m.
NER Named-entity recognition batch_69f129beb6c8819083be3b7479bc032f completed April 28, 2026, 9:42 p.m.
NED1 Entity disambiguation (via context triple) batch_6a0a96fc50208190b2f57f42a77696c1 completed May 18, 2026, 4:35 a.m.
NEDg Description generation batch_6a0a9b03e16081908f17c1b16395ca14 completed May 18, 2026, 4:52 a.m.
NED2 Entity disambiguation (via description) batch_6a0a9b98344c8190852d53828b71b8f5 completed May 18, 2026, 4:54 a.m.
Created at: April 16, 2026, 8:32 p.m.