Takaaki Kajita
E537891
Takaaki Kajita is a Japanese physicist and Nobel laureate renowned for his work on neutrino oscillations, which demonstrated that neutrinos have mass.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Takaaki Kajita canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5660482 — 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: Takaaki Kajita Context triple: [Arthur McDonald, sharedAwardWith, Takaaki Kajita]
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A.
Toshihide Maskawa
Toshihide Maskawa was a Japanese theoretical physicist and Nobel laureate renowned for co-formulating the Cabibbo–Kobayashi–Maskawa (CKM) matrix, which explains CP violation in the Standard Model of particle physics.
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B.
Masatoshi Koshiba
Masatoshi Koshiba was a Japanese physicist and Nobel laureate renowned for his pioneering work in neutrino astronomy and the development of underground neutrino detectors.
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C.
Hitoshi Murayama
Hitoshi Murayama is a prominent Japanese theoretical physicist known for his work in particle physics and cosmology and for holding leading academic positions in both Japan and the United States.
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D.
Hideki Yukawa
Hideki Yukawa was a Japanese theoretical physicist and Nobel laureate best known for proposing the meson theory of nuclear forces.
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E.
Yoichiro Nambu
Yoichiro Nambu was a Japanese-American theoretical physicist renowned for his pioneering work on spontaneous symmetry breaking in particle physics, for which he received the Nobel Prize in Physics.
- 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: Takaaki Kajita Target entity description: Takaaki Kajita is a Japanese physicist and Nobel laureate renowned for his work on neutrino oscillations, which demonstrated that neutrinos have mass.
-
A.
Toshihide Maskawa
Toshihide Maskawa was a Japanese theoretical physicist and Nobel laureate renowned for co-formulating the Cabibbo–Kobayashi–Maskawa (CKM) matrix, which explains CP violation in the Standard Model of particle physics.
-
B.
Masatoshi Koshiba
Masatoshi Koshiba was a Japanese physicist and Nobel laureate renowned for his pioneering work in neutrino astronomy and the development of underground neutrino detectors.
-
C.
Hitoshi Murayama
Hitoshi Murayama is a prominent Japanese theoretical physicist known for his work in particle physics and cosmology and for holding leading academic positions in both Japan and the United States.
-
D.
Hideki Yukawa
Hideki Yukawa was a Japanese theoretical physicist and Nobel laureate best known for proposing the meson theory of nuclear forces.
-
E.
Yoichiro Nambu
Yoichiro Nambu was a Japanese-American theoretical physicist renowned for his pioneering work on spontaneous symmetry breaking in particle physics, for which he received the Nobel Prize in Physics.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese physicist
ⓘ
Nobel laureate ⓘ human ⓘ physicist ⓘ |
| affiliation |
Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
NERFINISHED
ⓘ
Super-Kamiokande Collaboration NERFINISHED ⓘ |
| awardReceived |
2015 Nobel Prize in Physics
NERFINISHED
ⓘ
Asahi Prize NERFINISHED ⓘ Japan Academy Prize NERFINISHED ⓘ Nobel Prize in Physics ⓘ Yoji Totsuka Prize NERFINISHED ⓘ |
| birthDate | 1959-03-09 ⓘ |
| birthPlace | Higashimatsuyama, Saitama, Japan NERFINISHED ⓘ |
| countryOfCitizenship | Japan ⓘ |
| degree | PhD in physics ⓘ |
| doctoralAdvisor | Masatoshi Koshiba NERFINISHED ⓘ |
| educatedAt |
Saitama University
NERFINISHED
ⓘ
University of Tokyo NERFINISHED ⓘ |
| employer |
Institute for Cosmic Ray Research
NERFINISHED
ⓘ
University of Tokyo NERFINISHED ⓘ |
| era |
20th-century physics
ⓘ
21st-century physics ⓘ |
| fieldOfWork |
astroparticle physics
ⓘ
neutrino physics ⓘ particle physics ⓘ |
| gender | male ⓘ |
| knownFor |
Super-Kamiokande experiment
NERFINISHED
ⓘ
demonstrating that neutrinos have mass ⓘ neutrino oscillations ⓘ |
| languageSpoken | Japanese ⓘ |
| memberOf |
Physical Society of Japan
NERFINISHED
ⓘ
Science Council of Japan NERFINISHED ⓘ |
| name | Takaaki Kajita NERFINISHED ⓘ |
| nativeName | 梶田 隆章 NERFINISHED ⓘ |
| nobelPrizeMotivation | for the discovery of neutrino oscillations, which shows that neutrinos have mass ⓘ |
| notableContribution |
establishing that the Standard Model must be extended to include neutrino mass
ⓘ
evidence for neutrino flavor change ⓘ |
| notableExperiment | Super-Kamiokande NERFINISHED ⓘ |
| positionHeld |
director of the Institute for Cosmic Ray Research
ⓘ
professor at the University of Tokyo ⓘ |
| researchFocus |
atmospheric neutrinos
ⓘ
neutrino oscillation parameters ⓘ |
| residence | Japan ⓘ |
| sharesNobelPrizeWith | Arthur B. McDonald NERFINISHED ⓘ |
| workLocation | Kamioka Observatory NERFINISHED ⓘ |
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: Takaaki Kajita Description of subject: Takaaki Kajita is a Japanese physicist and Nobel laureate renowned for his work on neutrino oscillations, which demonstrated that neutrinos have mass.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Kamioka Observatory