Triple

T13334911
Position Surface form Disambiguated ID Type / Status
Subject Heathrow rail and Underground stations E317663 entity
Predicate hasComponent P35 FINISHED
Object Heathrow Terminal 5 railway station
Heathrow Terminal 5 railway station is a major rail hub directly serving Heathrow Airport’s Terminal 5, providing mainline and express train connections to central London and beyond.
 E1051010 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 Terminal 5 railway station | Statement: [Heathrow rail and Underground stations, hasComponent, Heathrow Terminal 5 railway station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Heathrow Terminal 5 railway station
Context triple: [Heathrow rail and Underground stations, hasComponent, Heathrow Terminal 5 railway station]
  • A. Heathrow Terminal 4 railway station
    Heathrow Terminal 4 railway station is a rail stop serving London Heathrow Airport’s Terminal 4, providing direct train connections between the terminal and central London as well as other parts of the rail network.
  • B. Heathrow Terminal 5
    Heathrow Terminal 5 is a major passenger terminal at London Heathrow Airport, primarily serving British Airways and known for its modern design and large capacity.
  • C. Heathrow Terminal 4
    Heathrow Terminal 4 is one of the passenger terminals at London Heathrow Airport, serving various international and domestic flights and connected to central London by rail and other transport links.
  • D. Heathrow Airport rail network
    The Heathrow Airport rail network is the integrated system of rail and metro services that connect Heathrow’s terminals with central London and the wider UK rail network.
  • E. Heathrow Central (Terminals 2 & 3)
    Heathrow Central (Terminals 2 & 3) is a major rail station complex at London Heathrow Airport serving Terminals 2 and 3 with direct express and rail connections to central London.
  • 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 Terminal 5 railway station
Triple: [Heathrow rail and Underground stations, hasComponent, Heathrow Terminal 5 railway station]
Generated description
Heathrow Terminal 5 railway station is a major rail hub directly serving Heathrow Airport’s Terminal 5, providing mainline and express train connections to central London and beyond.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Heathrow Terminal 5 railway station
Target entity description: Heathrow Terminal 5 railway station is a major rail hub directly serving Heathrow Airport’s Terminal 5, providing mainline and express train connections to central London and beyond.
  • A. Heathrow Terminal 4 railway station
    Heathrow Terminal 4 railway station is a rail stop serving London Heathrow Airport’s Terminal 4, providing direct train connections between the terminal and central London as well as other parts of the rail network.
  • B. Heathrow Terminal 5
    Heathrow Terminal 5 is a major passenger terminal at London Heathrow Airport, primarily serving British Airways and known for its modern design and large capacity.
  • C. Heathrow Terminal 4
    Heathrow Terminal 4 is one of the passenger terminals at London Heathrow Airport, serving various international and domestic flights and connected to central London by rail and other transport links.
  • D. Heathrow Airport rail network
    The Heathrow Airport rail network is the integrated system of rail and metro services that connect Heathrow’s terminals with central London and the wider UK rail network.
  • E. Heathrow Central (Terminals 2 & 3)
    Heathrow Central (Terminals 2 & 3) is a major rail station complex at London Heathrow Airport serving Terminals 2 and 3 with direct express and rail connections to central London.
  • 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_69d806b5a3c08190b42c267fb092f98a completed April 9, 2026, 8:06 p.m.
NER Named-entity recognition batch_69d99cff44e08190b9583baf0b626e42 completed April 11, 2026, 12:59 a.m.
NED1 Entity disambiguation (via context triple) batch_69f77f7a13508190bbab6eb68fb52a18 completed May 3, 2026, 5:01 p.m.
NEDg Description generation batch_69f78058d4c88190be75e0a38cdc20da completed May 3, 2026, 5:05 p.m.
NED2 Entity disambiguation (via description) batch_69f78157b9cc8190a1855cb9715aa7d5 completed May 3, 2026, 5:09 p.m.
Created at: April 9, 2026, 9:30 p.m.