Triple

T144400
Position Surface form Disambiguated ID Type / Status
Subject Surrey E2921 entity
Predicate contains P35 FINISHED
Object Epsom Downs Racecourse
Epsom Downs Racecourse is a historic English horse racing venue best known as the home of the Epsom Derby, one of the world’s most prestigious flat races.
 E17979 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: Epsom Downs Racecourse | Statement: [Surrey, contains, Epsom Downs Racecourse]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Epsom Downs Racecourse
Context triple: [Surrey, contains, Epsom Downs Racecourse]
  • A. Sandown Park Racecourse
    Sandown Park Racecourse is a prominent British horse racing venue known for hosting both flat and National Hunt races, located in Esher, Surrey.
  • B. Lingfield
    Lingfield is a village and civil parish in the Tandridge district of Surrey, England, known for its historic buildings and Lingfield Park Racecourse.
  • C. Abbey Stadium
    Abbey Stadium is a football ground in Cambridge, England, best known as the long-time home of Cambridge United F.C.
  • D. Littleton Common
    Littleton Common is the historic village center and primary civic and commercial hub of the town of Littleton, Massachusetts.
  • E. Festival Hall
    Festival Hall is a large indoor exhibition and event venue located on Chicago’s Navy Pier, used for trade shows, conventions, and public events.
  • 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: Epsom Downs Racecourse
Triple: [Surrey, contains, Epsom Downs Racecourse]
Generated description
Epsom Downs Racecourse is a historic English horse racing venue best known as the home of the Epsom Derby, one of the world’s most prestigious flat races.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Epsom Downs Racecourse
Target entity description: Epsom Downs Racecourse is a historic English horse racing venue best known as the home of the Epsom Derby, one of the world’s most prestigious flat races.
  • A. Sandown Park Racecourse
    Sandown Park Racecourse is a prominent British horse racing venue known for hosting both flat and National Hunt races, located in Esher, Surrey.
  • B. Lingfield
    Lingfield is a village and civil parish in the Tandridge district of Surrey, England, known for its historic buildings and Lingfield Park Racecourse.
  • C. Abbey Stadium
    Abbey Stadium is a football ground in Cambridge, England, best known as the long-time home of Cambridge United F.C.
  • D. Littleton Common
    Littleton Common is the historic village center and primary civic and commercial hub of the town of Littleton, Massachusetts.
  • E. Festival Hall
    Festival Hall is a large indoor exhibition and event venue located on Chicago’s Navy Pier, used for trade shows, conventions, and public events.
  • 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_69a2521e35c08190b28e5c9f1e3c9b59 completed Feb. 28, 2026, 2:25 a.m.
NER Named-entity recognition batch_69a257e935bc8190a03e54a10e9ba6f7 completed Feb. 28, 2026, 2:50 a.m.
NED1 Entity disambiguation (via context triple) batch_69a2c52c563c81908a53f3dbe1eb7455 completed Feb. 28, 2026, 10:36 a.m.
NEDg Description generation batch_69a2c5f4c6c08190a54543e7cbdbae14 completed Feb. 28, 2026, 10:39 a.m.
NED2 Entity disambiguation (via description) batch_69a2c658297481908c6d6a845be7152c completed Feb. 28, 2026, 10:41 a.m.
Created at: Feb. 28, 2026, 2:31 a.m.