Kazuhiko Nishijima
E363335
Kazuhiko Nishijima was a Japanese theoretical physicist best known for co-formulating the Gell-Mann–Nishijima formula, which helped classify subatomic particles and advance the quark model in particle physics.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kazuhiko Nishijima canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1580458 — 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: Kazuhiko Nishijima Context triple: [Gell-Mann–Nishijima formula, namedAfter, Kazuhiko Nishijima]
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A.
Shigeo Nagashima
Shigeo Nagashima is a legendary Japanese baseball player and manager, widely regarded as one of the greatest figures in Nippon Professional Baseball history.
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B.
Tatsuhiko Kawashima
Tatsuhiko Kawashima is a Japanese academic and former professor best known as the father of Princess Kiko of the Japanese Imperial Family.
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C.
Koichi Tanaka
Koichi Tanaka is a Japanese engineer and Nobel Prize–winning chemist renowned for his pioneering work in mass spectrometry, particularly soft laser desorption ionization.
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D.
Jun-ichi Nishizawa
Jun-ichi Nishizawa was a pioneering Japanese engineer and physicist often called the "father of Japanese microelectronics" for his foundational contributions to semiconductor and optoelectronic device technology.
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E.
Yoshikazu Yanagisawa
Yoshikazu Yanagisawa was a Japanese architect best known for designing Osaka’s iconic Osaka Aquarium Kaiyukan.
- 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: Kazuhiko Nishijima Target entity description: Kazuhiko Nishijima was a Japanese theoretical physicist best known for co-formulating the Gell-Mann–Nishijima formula, which helped classify subatomic particles and advance the quark model in particle physics.
-
A.
Shigeo Nagashima
Shigeo Nagashima is a legendary Japanese baseball player and manager, widely regarded as one of the greatest figures in Nippon Professional Baseball history.
-
B.
Tatsuhiko Kawashima
Tatsuhiko Kawashima is a Japanese academic and former professor best known as the father of Princess Kiko of the Japanese Imperial Family.
-
C.
Koichi Tanaka
Koichi Tanaka is a Japanese engineer and Nobel Prize–winning chemist renowned for his pioneering work in mass spectrometry, particularly soft laser desorption ionization.
-
D.
Jun-ichi Nishizawa
Jun-ichi Nishizawa was a pioneering Japanese engineer and physicist often called the "father of Japanese microelectronics" for his foundational contributions to semiconductor and optoelectronic device technology.
-
E.
Yoshikazu Yanagisawa
Yoshikazu Yanagisawa was a Japanese architect best known for designing Osaka’s iconic Osaka Aquarium Kaiyukan.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese scientist
ⓘ
human ⓘ physicist ⓘ theoretical physicist ⓘ |
| areaOfInfluence |
20th-century physics
ⓘ
Japanese physics community ⓘ |
| coFormulatedWith | Murray Gell-Mann ⓘ |
| contributedTo |
particle classification schemes
ⓘ
quark model ⓘ |
| countryOfCitizenship | Japan ⓘ |
| familyName | Nishijima NERFINISHED ⓘ |
| fieldOfWork |
particle physics
ⓘ
theoretical physics ⓘ |
| gender | male ⓘ |
| givenName | Kazuhiko NERFINISHED ⓘ |
| hasAcademicDiscipline |
high-energy physics
ⓘ
quantum field theory ⓘ |
| hasContribution |
relation between electric charge, isospin, and hypercharge
ⓘ
systematic classification of mesons and baryons ⓘ |
| hasHonorificPrefix | Professor ⓘ |
| hasNotableAchievement |
advanced understanding of internal symmetries in particle physics
ⓘ
helped establish quantum number relations for hadrons ⓘ provided theoretical basis for organizing hadron families ⓘ |
| hasRole |
educator
ⓘ
researcher ⓘ |
| influenced |
modern particle physics
ⓘ
quark classification schemes ⓘ |
| isPartOf |
development of the Standard Model
ⓘ
history of particle physics ⓘ |
| knownFor |
Gell-Mann–Nishijima formula
ⓘ
classification of hadrons ⓘ development of quark model foundations ⓘ |
| languageOfWorkOrName | Japanese ⓘ |
| name | Kazuhiko Nishijima NERFINISHED ⓘ |
| nationality | Japanese ⓘ |
| notableConcept |
Gell-Mann–Nishijima formula
ⓘ
surface form:
Nishijima–Gell-Mann formula
Gell-Mann–Nishijima formula ⓘ
surface form:
hypercharge–isospin relation
|
| occupation | university professor ⓘ |
| residence | Japan ⓘ |
| studied |
hadron classification
ⓘ
subatomic particles ⓘ |
| workFocus |
quantum numbers of hadrons
ⓘ
symmetries in particle physics ⓘ |
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: Kazuhiko Nishijima Description of subject: Kazuhiko Nishijima was a Japanese theoretical physicist best known for co-formulating the Gell-Mann–Nishijima formula, which helped classify subatomic particles and advance the quark model in particle physics.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.