Triple

T4018822
Position Surface form Disambiguated ID Type / Status
Subject Brentford E91229 entity
Predicate hasNearbyUndergroundStation P5648 FINISHED
Object Northfields tube station
Northfields tube station is a London Underground station in west London on the Piccadilly line, serving the Northfields area between South Ealing and Boston Manor.
 E446029 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: Northfields tube station | Statement: [Brentford, hasNearbyUndergroundStation, Northfields tube station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Northfields tube station
Context triple: [Brentford, hasNearbyUndergroundStation, Northfields tube station]
  • A. Hampstead tube station
    Hampstead tube station is a London Underground station on the Northern line, known for serving the Hampstead area of the London Borough of Camden and for having one of the deepest platforms on the network.
  • B. Watford tube station
    Watford tube station is a London Underground station in Hertfordshire that serves as the northern terminus of the Watford branch of the Metropolitan line.
  • C. Finchley Road Underground station
    Finchley Road Underground station is a London Underground station in north London that serves as a key interchange on the Jubilee and Metropolitan lines.
  • D. Finsbury Park station
    Finsbury Park station is a major transport hub in North London, serving both National Rail and London Underground lines and providing access to surrounding areas including Arsenal’s Emirates Stadium.
  • E. Gloucester Road tube station
    Gloucester Road tube station is a London Underground station in the Royal Borough of Kensington and Chelsea served by the District, Circle, and Piccadilly lines.
  • 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: Northfields tube station
Triple: [Brentford, hasNearbyUndergroundStation, Northfields tube station]
Generated description
Northfields tube station is a London Underground station in west London on the Piccadilly line, serving the Northfields area between South Ealing and Boston Manor.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Northfields tube station
Target entity description: Northfields tube station is a London Underground station in west London on the Piccadilly line, serving the Northfields area between South Ealing and Boston Manor.
  • A. Hampstead tube station
    Hampstead tube station is a London Underground station on the Northern line, known for serving the Hampstead area of the London Borough of Camden and for having one of the deepest platforms on the network.
  • B. Watford tube station
    Watford tube station is a London Underground station in Hertfordshire that serves as the northern terminus of the Watford branch of the Metropolitan line.
  • C. Finchley Road Underground station
    Finchley Road Underground station is a London Underground station in north London that serves as a key interchange on the Jubilee and Metropolitan lines.
  • D. Finsbury Park station
    Finsbury Park station is a major transport hub in North London, serving both National Rail and London Underground lines and providing access to surrounding areas including Arsenal’s Emirates Stadium.
  • E. Gloucester Road tube station
    Gloucester Road tube station is a London Underground station in the Royal Borough of Kensington and Chelsea served by the District, Circle, and Piccadilly lines.
  • 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_69aed9618b04819081750d979d2af098 completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aefaa984948190a252eaeb9dbae454 completed March 9, 2026, 4:51 p.m.
NED1 Entity disambiguation (via context triple) batch_69bd568effac81908bc52b5240e47c8c completed March 20, 2026, 2:15 p.m.
NEDg Description generation batch_69bd57712e6c8190b96929bd7ba4a9f8 completed March 20, 2026, 2:19 p.m.
NED2 Entity disambiguation (via description) batch_69bd57cf63108190b818cf33675d5721 completed March 20, 2026, 2:21 p.m.
Created at: March 9, 2026, 3:35 p.m.