Triple

T13751252
Position Surface form Disambiguated ID Type / Status
Subject West Ealing railway station E330355 entity
Predicate railwayLine P848 FINISHED
Object Greenford branch line
The Greenford branch line is a short suburban railway line in West London that connects Greenford to the Great Western Main Line, primarily serving local commuter traffic.
E1058949 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: Greenford branch line | Statement: [West Ealing railway station, railwayLine, Greenford branch line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Greenford branch line
Context triple: [West Ealing railway station, railwayLine, Greenford branch line]
  • A. Chingford branch line
    The Chingford branch line is a suburban railway route in northeast London that connects central London with the Chingford area, serving several intermediate stations along the way.
  • B. Catford Loop Line
    The Catford Loop Line is a suburban railway route in southeast London that provides an alternative corridor between central London and Kent, serving several local commuter stations along the way.
  • C. Cockfosters branch
    The Cockfosters branch is the eastern arm of the London Underground’s Piccadilly line, running from central London out to its terminus at Cockfosters in north London.
  • D. Chessington Branch Line
    The Chessington Branch Line is a suburban railway line in southwest London that connects the South West Main Line to the Chessington area, serving local commuter traffic.
  • E. Bromley North Line
    The Bromley North Line is a short suburban railway branch in southeast London that connects Bromley North to the main line at Grove Park, providing commuter services into 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: Greenford branch line
Triple: [West Ealing railway station, railwayLine, Greenford branch line]
Generated description
The Greenford branch line is a short suburban railway line in West London that connects Greenford to the Great Western Main Line, primarily serving local commuter traffic.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Greenford branch line
Target entity description: The Greenford branch line is a short suburban railway line in West London that connects Greenford to the Great Western Main Line, primarily serving local commuter traffic.
  • A. Chingford branch line
    The Chingford branch line is a suburban railway route in northeast London that connects central London with the Chingford area, serving several intermediate stations along the way.
  • B. Catford Loop Line
    The Catford Loop Line is a suburban railway route in southeast London that provides an alternative corridor between central London and Kent, serving several local commuter stations along the way.
  • C. Cockfosters branch
    The Cockfosters branch is the eastern arm of the London Underground’s Piccadilly line, running from central London out to its terminus at Cockfosters in north London.
  • D. Chessington Branch Line
    The Chessington Branch Line is a suburban railway line in southwest London that connects the South West Main Line to the Chessington area, serving local commuter traffic.
  • E. Bromley North Line
    The Bromley North Line is a short suburban railway branch in southeast London that connects Bromley North to the main line at Grove Park, providing commuter services into 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_69d81c573f288190aa2403d484fa3d49 completed April 9, 2026, 9:38 p.m.
NER Named-entity recognition batch_69de02148c208190a882927905a861a6 completed April 14, 2026, 9 a.m.
NED1 Entity disambiguation (via context triple) batch_69f7a8560614819085958205637f3863 completed May 3, 2026, 7:56 p.m.
NEDg Description generation batch_69f7a8f6833881908bcca35d7d01596a completed May 3, 2026, 7:58 p.m.
NED2 Entity disambiguation (via description) batch_69f7a9c3c6548190802e1163c9c35b67 completed May 3, 2026, 8:02 p.m.
Created at: April 9, 2026, 10:08 p.m.