Hisashi Iwakuma
E636291
Hisashi Iwakuma is a Japanese former professional baseball pitcher best known for his successful career in Nippon Professional Baseball and Major League Baseball, including an All-Star stint with the Seattle Mariners.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hisashi Iwakuma canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7006015 — 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: Hisashi Iwakuma Context triple: [Tohoku Rakuten Golden Eagles, notablePlayer, Hisashi Iwakuma]
-
A.
Koji Uehara
Koji Uehara is a Japanese former professional baseball pitcher best known as an elite closer in Major League Baseball, particularly for his dominant postseason performance with the Boston Red Sox.
-
B.
Masahiro Tanaka
Masahiro Tanaka is a Japanese professional baseball pitcher best known for his dominant career with the Tohoku Rakuten Golden Eagles and the New York Yankees, as well as his key performances in international competition.
-
C.
Daisuke Matsuzaka
Daisuke Matsuzaka is a Japanese former professional baseball pitcher renowned for his dominance in Nippon Professional Baseball and his subsequent Major League Baseball career, including a World Series title with the Boston Red Sox.
-
D.
Hideo Nomo
Hideo Nomo is a pioneering Japanese pitcher who became a Major League Baseball star in the 1990s, helping open the door for future Japanese players in the United States.
-
E.
Hiroki Kuroda
Hiroki Kuroda is a Japanese former professional baseball pitcher best known for his successful career in both Nippon Professional Baseball and Major League Baseball, including standout seasons with the Los Angeles Dodgers and New York Yankees.
- 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: Hisashi Iwakuma Target entity description: Hisashi Iwakuma is a Japanese former professional baseball pitcher best known for his successful career in Nippon Professional Baseball and Major League Baseball, including an All-Star stint with the Seattle Mariners.
-
A.
Koji Uehara
Koji Uehara is a Japanese former professional baseball pitcher best known as an elite closer in Major League Baseball, particularly for his dominant postseason performance with the Boston Red Sox.
-
B.
Masahiro Tanaka
Masahiro Tanaka is a Japanese professional baseball pitcher best known for his dominant career with the Tohoku Rakuten Golden Eagles and the New York Yankees, as well as his key performances in international competition.
-
C.
Daisuke Matsuzaka
Daisuke Matsuzaka is a Japanese former professional baseball pitcher renowned for his dominance in Nippon Professional Baseball and his subsequent Major League Baseball career, including a World Series title with the Boston Red Sox.
-
D.
Hideo Nomo
Hideo Nomo is a pioneering Japanese pitcher who became a Major League Baseball star in the 1990s, helping open the door for future Japanese players in the United States.
-
E.
Hiroki Kuroda
Hiroki Kuroda is a Japanese former professional baseball pitcher best known for his successful career in both Nippon Professional Baseball and Major League Baseball, including standout seasons with the Los Angeles Dodgers and New York Yankees.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese professional baseball player
ⓘ
baseball player ⓘ human ⓘ pitcher ⓘ |
| award | Eiji Sawamura Award NERFINISHED ⓘ |
| bats | right ⓘ |
| birthName | Hisashi Iwakuma NERFINISHED ⓘ |
| countryOfCitizenship | Japan ⓘ |
| dateOfBirth | 1981-04-12 ⓘ |
| debutLeague |
Major League Baseball
NERFINISHED
ⓘ
Nippon Professional Baseball NERFINISHED ⓘ |
| EijiSawamuraAwardYear | 2008 ⓘ |
| ethnicity | Japanese ⓘ |
| familyName | Iwakuma NERFINISHED ⓘ |
| gender | male ⓘ |
| givenName | Hisashi NERFINISHED ⓘ |
| height | 190 cm ⓘ |
| jerseyNumber |
18
ⓘ
19 ⓘ |
| knownFor |
excellent control
ⓘ
split-finger fastball ⓘ |
| language | Japanese ⓘ |
| laterOccupation | baseball coach ⓘ |
| league |
Major League Baseball
ⓘ
Nippon Professional Baseball NERFINISHED ⓘ |
| MLBAllStar | 2013 ⓘ |
| name | Hisashi Iwakuma NERFINISHED ⓘ |
| nationalTeam | Japan national baseball team NERFINISHED ⓘ |
| noHitterDate | 2015-08-12 ⓘ |
| noHitterOpponent | Baltimore Orioles NERFINISHED ⓘ |
| notableAchievement | pitched a no-hitter for the Seattle Mariners ⓘ |
| NPBMostValuablePlayer | 2008 ⓘ |
| occupation | professional baseball player ⓘ |
| placeOfBirth | Higashiyamato, Tokyo, Japan NERFINISHED ⓘ |
| playedInTournament | 2009 World Baseball Classic NERFINISHED ⓘ |
| position | starting pitcher ⓘ |
| retiredFromMLB | 2017 ⓘ |
| retiredFromNPB | 2020 ⓘ |
| roleInTournament | starting pitcher ⓘ |
| signedWith | Seattle Mariners NERFINISHED ⓘ |
| signedWithYear | 2012 ⓘ |
| sport | baseball ⓘ |
| team |
Osaka Kintetsu Buffaloes
NERFINISHED
ⓘ
Seattle Mariners NERFINISHED ⓘ Tohoku Rakuten Golden Eagles NERFINISHED ⓘ |
| throws | right ⓘ |
| weight | 95 kg ⓘ |
| WorldBaseballClassicChampion | 2009 ⓘ |
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: Hisashi Iwakuma Description of subject: Hisashi Iwakuma is a Japanese former professional baseball pitcher best known for his successful career in Nippon Professional Baseball and Major League Baseball, including an All-Star stint with the Seattle Mariners.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.