Triple

T19293970
Position Surface form Disambiguated ID Type / Status
Subject Selhurst railway station E482511 entity
Predicate servedByServiceTo P6787 FINISHED
Object Coulsdon Town
Coulsdon Town is a suburban area and railway station in the London Borough of Croydon, England, forming part of South London's commuter belt.
 E1310704 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: Coulsdon Town | Statement: [Selhurst railway station, servedByServiceTo, Coulsdon Town]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Coulsdon Town
Context triple: [Selhurst railway station, servedByServiceTo, Coulsdon Town]
  • A. Coulsdon
    Coulsdon is a suburban town in the London Borough of Croydon, England, known for its residential character and proximity to the North Downs.
  • B. Coulsdon South
    Coulsdon South is a railway station in the London Borough of Croydon serving the Coulsdon area on the Brighton Main Line.
  • C. Coulsdon Common
    Coulsdon Common is a large public open space and nature reserve in the Coulsdon area of south London, known for its woodlands, grasslands, and walking trails.
  • D. Coulsdon Rural District
    Coulsdon Rural District was a former local government district in Surrey, England, that governed a largely rural area south of London before its urbanization and reorganization in the early 20th century.
  • E. Crayford
    Crayford is a suburban town in southeast London, England, known for its residential character and rail links 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: Coulsdon Town
Triple: [Selhurst railway station, servedByServiceTo, Coulsdon Town]
Generated description
Coulsdon Town is a suburban area and railway station in the London Borough of Croydon, England, forming part of South London's commuter belt.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Coulsdon Town
Target entity description: Coulsdon Town is a suburban area and railway station in the London Borough of Croydon, England, forming part of South London's commuter belt.
  • A. Coulsdon
    Coulsdon is a suburban town in the London Borough of Croydon, England, known for its residential character and proximity to the North Downs.
  • B. Coulsdon South chosen
    Coulsdon South is a railway station in the London Borough of Croydon serving the Coulsdon area on the Brighton Main Line.
  • C. Coulsdon Common
    Coulsdon Common is a large public open space and nature reserve in the Coulsdon area of south London, known for its woodlands, grasslands, and walking trails.
  • D. Coulsdon Rural District
    Coulsdon Rural District was a former local government district in Surrey, England, that governed a largely rural area south of London before its urbanization and reorganization in the early 20th century.
  • E. Crayford
    Crayford is a suburban town in southeast London, England, known for its residential character and rail links into central London.
  • 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_69d8e8cf61b0819096fe3e4107827c4e completed April 10, 2026, 12:10 p.m.
NER Named-entity recognition batch_69e5fc84500c81908ac53711335ad2d9 completed April 20, 2026, 10:14 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0723fd9abc819091665dde00e3884d completed May 15, 2026, 1:47 p.m.
NEDg Description generation batch_6a07250f236c8190b32adebcae3745af completed May 15, 2026, 1:52 p.m.
NED2 Entity disambiguation (via description) batch_6a0726a79b308190a584bc808f4b2faa completed May 15, 2026, 1:59 p.m.
Created at: April 10, 2026, 1:31 p.m.