Triple

T11585899
Position Surface form Disambiguated ID Type / Status
Subject Ohi Racecourse E274752 entity
Predicate operatedBy P86 FINISHED
Object Tokyo City Keiba
Tokyo City Keiba is the public operator of horse racing events and facilities in Tokyo, best known for managing the Ohi Racecourse and its popular night races.
 E934920 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: Tokyo City Keiba | Statement: [Ohi Racecourse, operatedBy, Tokyo City Keiba]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tokyo City Keiba
Context triple: [Ohi Racecourse, operatedBy, Tokyo City Keiba]
  • A. Tokyo Kyojin
    Tokyo Kyojin is an alternate name for the Yomiuri Giants, one of Japan’s most historic and successful professional baseball teams based in Tokyo.
  • B. Keiō
    Keiō was the final Japanese era of the Edo period, spanning the turbulent years leading up to the Meiji Restoration.
  • C. Takarazuka
    Takarazuka is a Japanese city in Hyōgo Prefecture best known for the all-female Takarazuka Revue theater troupe and its popular hot spring resorts.
  • D. Gaimushō
    Gaimushō is Japan’s Ministry of Foreign Affairs, responsible for managing the country’s diplomatic relations and international policies.
  • E. Machida
    Machida is a suburban city in the southwestern part of Tokyo, Japan, known as a residential and commercial hub with convenient rail connections into central Tokyo.
  • 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: Tokyo City Keiba
Triple: [Ohi Racecourse, operatedBy, Tokyo City Keiba]
Generated description
Tokyo City Keiba is the public operator of horse racing events and facilities in Tokyo, best known for managing the Ohi Racecourse and its popular night races.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tokyo City Keiba
Target entity description: Tokyo City Keiba is the public operator of horse racing events and facilities in Tokyo, best known for managing the Ohi Racecourse and its popular night races.
  • A. Tokyo Kyojin
    Tokyo Kyojin is an alternate name for the Yomiuri Giants, one of Japan’s most historic and successful professional baseball teams based in Tokyo.
  • B. Keiō
    Keiō was the final Japanese era of the Edo period, spanning the turbulent years leading up to the Meiji Restoration.
  • C. Takarazuka
    Takarazuka is a Japanese city in Hyōgo Prefecture best known for the all-female Takarazuka Revue theater troupe and its popular hot spring resorts.
  • D. Gaimushō
    Gaimushō is Japan’s Ministry of Foreign Affairs, responsible for managing the country’s diplomatic relations and international policies.
  • E. Machida
    Machida is a suburban city in the southwestern part of Tokyo, Japan, known as a residential and commercial hub with convenient rail connections into central Tokyo.
  • 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_69d6aae6b14c81908dc5a74bad7591f9 completed April 8, 2026, 7:22 p.m.
NER Named-entity recognition batch_69d89462203881908870e991a5b21770 completed April 10, 2026, 6:10 a.m.
NED1 Entity disambiguation (via context triple) batch_69e7143ee0548190b71ddae0ab7c68cb completed April 21, 2026, 6:07 a.m.
NEDg Description generation batch_69e720fb192881909c129f93c8b88f42 completed April 21, 2026, 7:02 a.m.
NED2 Entity disambiguation (via description) batch_69e7233efb6c81909dbf1aef080f5598 completed April 21, 2026, 7:11 a.m.
Created at: April 8, 2026, 9:38 p.m.