Triple

T2377907
Position Surface form Disambiguated ID Type / Status
Subject Heathrow Express E46241 entity
Predicate operator P179 FINISHED
Object Heathrow Express Operating Company
Heathrow Express Operating Company is the train operating company responsible for running the high-speed rail service between London Paddington and Heathrow Airport.
 E46241 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: Heathrow Express Operating Company | Statement: [Heathrow Express, operator, Heathrow Express Operating Company]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Heathrow Express Operating Company
Context triple: [Heathrow Express, operator, Heathrow Express Operating Company]
  • A. Heathrow Airport Holdings
    Heathrow Airport Holdings is a British company that owns and operates Heathrow Airport and several other aviation-related assets in the United Kingdom.
  • B. Heathrow Express
    Heathrow Express is a non-stop high-speed train service linking London Paddington station with Heathrow Airport, providing one of the fastest rail connections between central London and the airport.
  • C. Manchester Airports Group
    Manchester Airports Group is a leading UK-based airport operator that owns and manages several major airports, including Manchester, London Stansted, and East Midlands.
  • D. London Luton Airport Operations Limited
    London Luton Airport Operations Limited is the company responsible for managing and running the commercial and operational activities of London Luton Airport in the United Kingdom.
  • E. Gatwick Express
    Gatwick Express is a non-stop train service in the United Kingdom that connects central London with Gatwick 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: Heathrow Express Operating Company
Triple: [Heathrow Express, operator, Heathrow Express Operating Company]
Generated description
Heathrow Express Operating Company is the train operating company responsible for running the high-speed rail service between London Paddington and Heathrow Airport.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Heathrow Express Operating Company
Target entity description: Heathrow Express Operating Company is the train operating company responsible for running the high-speed rail service between London Paddington and Heathrow Airport.
  • A. Heathrow Airport Holdings
    Heathrow Airport Holdings is a British company that owns and operates Heathrow Airport and several other aviation-related assets in the United Kingdom.
  • B. Heathrow Express chosen
    Heathrow Express is a non-stop high-speed train service linking London Paddington station with Heathrow Airport, providing one of the fastest rail connections between central London and the airport.
  • C. Manchester Airports Group
    Manchester Airports Group is a leading UK-based airport operator that owns and manages several major airports, including Manchester, London Stansted, and East Midlands.
  • D. London Luton Airport Operations Limited
    London Luton Airport Operations Limited is the company responsible for managing and running the commercial and operational activities of London Luton Airport in the United Kingdom.
  • E. Gatwick Express
    Gatwick Express is a non-stop train service in the United Kingdom that connects central London with Gatwick Airport.
  • F. None of above.

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_69a88a1554a48190a0180682bcf099be completed March 4, 2026, 7:37 p.m.
NER Named-entity recognition batch_69abc79610e8819084abfbccd1dc67c0 completed March 7, 2026, 6:37 a.m.
NED1 Entity disambiguation (via context triple) batch_69aea8af12bc8190a6667beb729406a3 completed March 9, 2026, 11:02 a.m.
NEDg Description generation batch_69aeab34e4d0819088a24121785f81c6 completed March 9, 2026, 11:12 a.m.
NED2 Entity disambiguation (via description) batch_69aeabcae91c81908b2197ce0ef7eaa9 completed March 9, 2026, 11:15 a.m.
Created at: March 4, 2026, 7:57 p.m.