Triple

T16906216
Position Surface form Disambiguated ID Type / Status
Subject Santa Anita Park E424568 entity
Predicate operatedBy P86 FINISHED
Object Santa Anita Race Track Company
Santa Anita Race Track Company is the corporate entity that owns and manages the historic Santa Anita Park horse racing facility in Arcadia, California.
 E424568 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Santa Anita Race Track Company | Statement: [Santa Anita Park, operatedBy, Santa Anita Race Track Company]

Disambiguation candidates (2 decisions)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Santa Anita Race Track Company
Context triple: [Santa Anita Park, operatedBy, Santa Anita Race Track Company]
  • A. Santa Anita Park
    Santa Anita Park is a historic thoroughbred racetrack in Arcadia, California, renowned for hosting major horse racing events such as the Santa Anita Derby and multiple Breeders’ Cup championships.
  • B. Santa Anita
    Santa Anita is a Mexico City Metro station that serves as a transfer point between Line 4 and Line 8 in the southeastern part of the city.
  • C. Los Alamitos Race Course
    Los Alamitos Race Course is a prominent horse racing track in Southern California known especially for its Quarter Horse racing events.
  • D. Monmouth Park Racetrack
    Monmouth Park Racetrack is a historic thoroughbred horse racing venue located in Oceanport, New Jersey, known for hosting major summer racing events.
  • E. The Meadows Racetrack and Casino
    The Meadows Racetrack and Casino is a popular Pennsylvania entertainment complex featuring live horse racing, a casino gaming floor, and various dining and event options.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Santa Anita Race Track Company
Target entity description: Santa Anita Race Track Company is the corporate entity that owns and manages the historic Santa Anita Park horse racing facility in Arcadia, California.
  • A. Santa Anita Park chosen
    Santa Anita Park is a historic thoroughbred racetrack in Arcadia, California, renowned for hosting major horse racing events such as the Santa Anita Derby and multiple Breeders’ Cup championships.
  • B. Santa Anita
    Santa Anita is a Mexico City Metro station that serves as a transfer point between Line 4 and Line 8 in the southeastern part of the city.
  • C. Los Alamitos Race Course
    Los Alamitos Race Course is a prominent horse racing track in Southern California known especially for its Quarter Horse racing events.
  • D. Monmouth Park Racetrack
    Monmouth Park Racetrack is a historic thoroughbred horse racing venue located in Oceanport, New Jersey, known for hosting major summer racing events.
  • E. The Meadows Racetrack and Casino
    The Meadows Racetrack and Casino is a popular Pennsylvania entertainment complex featuring live horse racing, a casino gaming floor, and various dining and event options.
  • F. None of above.

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: Santa Anita Race Track Company
Triple: [Santa Anita Park, operatedBy, Santa Anita Race Track Company]
Generated description
Santa Anita Race Track Company is the corporate entity that owns and manages the historic Santa Anita Park horse racing facility in Arcadia, California.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d889da3e8c8190a2b118f383f0beac elicitation completed
NER batch_69e3ca392ff48190ab28f0bd3e9fc376 ner completed
NED1 batch_6a00c7b7b698819081d2e39976b69587 ned_source_triple completed
NED2 batch_6a00c9672ab881909770b4fe551ec622 ned_description completed
NEDg batch_6a00c8b9e4888190b25dd3256fc13dd1 nedg completed
Created at: April 10, 2026, 5:30 a.m.