Triple

T831748
Position Surface form Disambiguated ID Type / Status
Subject Epsom Downs Racecourse E17979 entity
Predicate near P350 FINISHED
Object Tattenham Corner railway station
Tattenham Corner railway station is a suburban rail station in Surrey, England, best known for serving racegoers attending events at the nearby Epsom Downs Racecourse, including the Epsom Derby.
 E103417 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: Tattenham Corner railway station | Statement: [Epsom Downs Racecourse, near, Tattenham Corner railway station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tattenham Corner railway station
Context triple: [Epsom Downs Racecourse, near, Tattenham Corner railway station]
  • A. 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.
  • B. Esher railway station
    Esher railway station is a suburban rail station in Surrey, England, serving the town of Esher and providing convenient access to nearby Sandown Park Racecourse.
  • C. Kew Bridge railway station
    Kew Bridge railway station is a suburban rail station in west London serving the Brentford area near Kew Bridge and the River Thames.
  • D. Orpington railway station
    Orpington railway station is a major commuter rail hub in the London Borough of Bromley, providing frequent services between southeast London, Kent, and central London.
  • E. Epsom Downs railway station
    Epsom Downs railway station is a suburban rail station in Surrey, England, serving the Epsom Downs area and providing access to the nearby Epsom Downs Racecourse.
  • 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: Tattenham Corner railway station
Triple: [Epsom Downs Racecourse, near, Tattenham Corner railway station]
Generated description
Tattenham Corner railway station is a suburban rail station in Surrey, England, best known for serving racegoers attending events at the nearby Epsom Downs Racecourse, including the Epsom Derby.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tattenham Corner railway station
Target entity description: Tattenham Corner railway station is a suburban rail station in Surrey, England, best known for serving racegoers attending events at the nearby Epsom Downs Racecourse, including the Epsom Derby.
  • A. 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.
  • B. Esher railway station
    Esher railway station is a suburban rail station in Surrey, England, serving the town of Esher and providing convenient access to nearby Sandown Park Racecourse.
  • C. Kew Bridge railway station
    Kew Bridge railway station is a suburban rail station in west London serving the Brentford area near Kew Bridge and the River Thames.
  • D. Orpington railway station
    Orpington railway station is a major commuter rail hub in the London Borough of Bromley, providing frequent services between southeast London, Kent, and central London.
  • E. Epsom Downs railway station
    Epsom Downs railway station is a suburban rail station in Surrey, England, serving the Epsom Downs area and providing access to the nearby Epsom Downs Racecourse.
  • 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_69a4937c9c188190aaa216f6b466f452 completed March 1, 2026, 7:29 p.m.
NER Named-entity recognition batch_69a4abb4be948190ae757df85bdc40e4 completed March 1, 2026, 9:12 p.m.
NED1 Entity disambiguation (via context triple) batch_69a7b84547508190b82c2012f4342529 completed March 4, 2026, 4:42 a.m.
NEDg Description generation batch_69a7ba424e28819088afe533fe3f1703 completed March 4, 2026, 4:51 a.m.
NED2 Entity disambiguation (via description) batch_69a7ba9f9be481909a30ef09721f3504 completed March 4, 2026, 4:52 a.m.
Created at: March 1, 2026, 7:38 p.m.