Triple

T8910737
Position Surface form Disambiguated ID Type / Status
Subject North Downs Tunnel E212173 entity
Predicate locatedOnRoute P6309 FINISHED
Object London to Folkestone high-speed line
The London to Folkestone high-speed line is a major UK railway route, largely used by Eurostar and domestic high-speed services, that connects London with the Channel Tunnel and the Kent coast.
E768378 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: London to Folkestone high-speed line | Statement: [North Downs Tunnel, locatedOnRoute, London to Folkestone high-speed line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: London to Folkestone high-speed line
Context triple: [North Downs Tunnel, locatedOnRoute, London to Folkestone high-speed line]
  • A. Elizabeth line
    The Elizabeth line is a major high-capacity railway route across London and its surroundings, forming part of the Crossrail project and providing fast east–west connections through the city.
  • B. London–Bristol rail corridor
    The London–Bristol rail corridor is a major intercity railway route in England linking the capital with the city of Bristol via key intermediate towns and lines.
  • C. Chiltern Link
    Chiltern Link is a long-distance walking trail that runs through the scenic countryside of the Chilterns in southern England.
  • D. Paris–London high-speed corridor
    The Paris–London high-speed corridor is a major international rail route linking the French and British capitals via high-speed lines and the Channel Tunnel, enabling fast Eurostar services between the two cities.
  • E. Brussels–London high-speed rail corridor
    The Brussels–London high-speed rail corridor is the international high-speed railway link connecting Brussels with London via the Channel Tunnel, primarily served by Eurostar services.
  • 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: London to Folkestone high-speed line
Triple: [North Downs Tunnel, locatedOnRoute, London to Folkestone high-speed line]
Generated description
The London to Folkestone high-speed line is a major UK railway route, largely used by Eurostar and domestic high-speed services, that connects London with the Channel Tunnel and the Kent coast.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: London to Folkestone high-speed line
Target entity description: The London to Folkestone high-speed line is a major UK railway route, largely used by Eurostar and domestic high-speed services, that connects London with the Channel Tunnel and the Kent coast.
  • A. Elizabeth line
    The Elizabeth line is a major high-capacity railway route across London and its surroundings, forming part of the Crossrail project and providing fast east–west connections through the city.
  • B. London–Bristol rail corridor
    The London–Bristol rail corridor is a major intercity railway route in England linking the capital with the city of Bristol via key intermediate towns and lines.
  • C. Chiltern Link
    Chiltern Link is a long-distance walking trail that runs through the scenic countryside of the Chilterns in southern England.
  • D. Paris–London high-speed corridor
    The Paris–London high-speed corridor is a major international rail route linking the French and British capitals via high-speed lines and the Channel Tunnel, enabling fast Eurostar services between the two cities.
  • E. Brussels–London high-speed rail corridor
    The Brussels–London high-speed rail corridor is the international high-speed railway link connecting Brussels with London via the Channel Tunnel, primarily served by Eurostar services.
  • 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_69ca8393b1808190bd4336787ffa2c40 completed March 30, 2026, 2:07 p.m.
NER Named-entity recognition batch_69cc6523b9348190a7cefac9e73e2004 completed April 1, 2026, 12:21 a.m.
NED1 Entity disambiguation (via context triple) batch_69cfc1cdfa6c8190af7b6312c73d59f9 completed April 3, 2026, 1:34 p.m.
NEDg Description generation batch_69cfc27bae88819094bcfdf10e89018b completed April 3, 2026, 1:36 p.m.
NED2 Entity disambiguation (via description) batch_69cfc61d26fc8190817b430cb6fa9646 completed April 3, 2026, 1:52 p.m.
Created at: March 30, 2026, 6:55 p.m.