Triple

T7430689
Position Surface form Disambiguated ID Type / Status
Subject London Underground Metropolitan line E171480 entity
Predicate terminus P388 FINISHED
Object Chesham station
Chesham station is a London Underground station in Buckinghamshire that serves as the northernmost point of the network on the Metropolitan line.
 E665443 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: Chesham station | Statement: [London Underground Metropolitan line, terminus, Chesham station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Chesham station
Context triple: [London Underground Metropolitan line, terminus, Chesham station]
  • A. Amersham station
    Amersham station is a London Underground and National Rail station in Buckinghamshire that serves as the outer terminus of the Metropolitan line and a key commuter hub into central London.
  • B. Chertsey railway station
    Chertsey railway station is a suburban rail station in Surrey, England, serving the town of Chertsey on the South Western Railway network.
  • C. Beaconsfield station
    Beaconsfield station is a suburban commuter rail stop serving the town of Beaconsfield, providing regular train connections to nearby urban centers.
  • D. Beaconsfield station
    Beaconsfield station is a light rail stop on the Massachusetts Bay Transportation Authority’s Green Line D branch serving the Brookline area near Boston.
  • E. Beaconsfield station
    Beaconsfield station is a railway station that serves the suburb of Beaconsfield in Melbourne, Victoria, as part of the city’s metropolitan train network.
  • 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: Chesham station
Triple: [London Underground Metropolitan line, terminus, Chesham station]
Generated description
Chesham station is a London Underground station in Buckinghamshire that serves as the northernmost point of the network on the Metropolitan line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Chesham station
Target entity description: Chesham station is a London Underground station in Buckinghamshire that serves as the northernmost point of the network on the Metropolitan line.
  • A. Amersham station
    Amersham station is a London Underground and National Rail station in Buckinghamshire that serves as the outer terminus of the Metropolitan line and a key commuter hub into central London.
  • B. Chertsey railway station
    Chertsey railway station is a suburban rail station in Surrey, England, serving the town of Chertsey on the South Western Railway network.
  • C. Beaconsfield station
    Beaconsfield station is a suburban commuter rail stop serving the town of Beaconsfield, providing regular train connections to nearby urban centers.
  • D. Beaconsfield station
    Beaconsfield station is a railway station that serves the suburb of Beaconsfield in Melbourne, Victoria, as part of the city’s metropolitan train network.
  • E. Beaconsfield station
    Beaconsfield station is a light rail stop on the Massachusetts Bay Transportation Authority’s Green Line D branch serving the Brookline area near Boston.
  • 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_69c68a63491881909281f73d4d5643bf completed March 27, 2026, 1:47 p.m.
NER Named-entity recognition batch_69c6f32324c481908c9ba594e8456728 completed March 27, 2026, 9:14 p.m.
NED1 Entity disambiguation (via context triple) batch_69c827829a848190afca7b5f79c51c7c completed March 28, 2026, 7:09 p.m.
NEDg Description generation batch_69c828c8b0588190a5a99380dc25d837 completed March 28, 2026, 7:15 p.m.
NED2 Entity disambiguation (via description) batch_69c8296962b48190b9f5cc4a66b93b91 completed March 28, 2026, 7:18 p.m.
Created at: March 27, 2026, 3:12 p.m.