Tokyo City Keiba
E934920
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tokyo City Keiba canonical | 2 |
| 大井競馬場 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11585899 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
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.
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
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
horse racing operator
ⓘ
public enterprise ⓘ sports organization ⓘ |
| aimsTo |
generate public revenue through horse racing
ⓘ
promote local horse racing in Tokyo ⓘ provide entertainment to Tokyo residents ⓘ |
| basedInCity | Tokyo NERFINISHED ⓘ |
| basedInPrefecture | Tokyo Metropolis NERFINISHED ⓘ |
| collaboratesWith |
Japan Racing Association
NERFINISHED
ⓘ
other local racing operators in Japan ⓘ |
| country | Japan ⓘ |
| governedBy | Japanese local public enterprise law NERFINISHED ⓘ |
| hasAudience |
on-site spectators
ⓘ
remote bettors ⓘ |
| hasBettingFormat |
exacta betting
ⓘ
multi-race bets ⓘ place betting ⓘ quinella betting ⓘ trifecta betting ⓘ win betting ⓘ |
| hasFeature |
nighttime illumination for races
ⓘ
urban track setting ⓘ |
| hasMainRacecourse | Ohi Racecourse NERFINISHED ⓘ |
| hasPrimarySport | horse racing ⓘ |
| hasVenue | Ohi Racecourse NERFINISHED ⓘ |
| industry |
gambling
ⓘ
horse racing ⓘ sports entertainment ⓘ |
| knownFor |
Tokyo Twinkle Race
NERFINISHED
ⓘ
night horse races ⓘ urban horse racing in Tokyo ⓘ |
| languageOfOperation | Japanese ⓘ |
| locatedIn | Tokyo ⓘ |
| managesFacilityType | horse racing track ⓘ |
| offers |
graded stakes races
ⓘ
local stakes races ⓘ |
| operates |
Ohi Racecourse
NERFINISHED
ⓘ
daytime racing events ⓘ night racing events ⓘ |
| operatesInRegion | Kanto region NERFINISHED ⓘ |
| providesService |
horse race wagering
ⓘ
off-track betting facilities ⓘ racing event organization ⓘ |
| regulates | local horse racing events in Tokyo ⓘ |
| sector | public sector ⓘ |
| typeOfRacing | thoroughbred horse racing ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Tokyo City Keiba Description of subject: 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.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
大井競馬場