Masatoshi Koshiba
E36531
Masatoshi Koshiba was a Japanese physicist and Nobel laureate renowned for his pioneering work in neutrino astronomy and the development of underground neutrino detectors.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Masatoshi Koshiba canonical | 7 |
| 小柴昌俊 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T262320 — 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: Masatoshi Koshiba Context triple: [University of Tokyo, hasNotableAlumni, Masatoshi Koshiba]
-
A.
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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B.
Carlo Rubbia
Carlo Rubbia is an Italian physicist and Nobel laureate renowned for his pivotal role in the experimental discovery of the W and Z bosons at CERN.
-
C.
Sheldon Glashow
Sheldon Glashow is an American theoretical physicist and Nobel laureate renowned for his pioneering contributions to the electroweak theory that unifies electromagnetic and weak nuclear forces.
-
D.
Leo Esaki
Leo Esaki is a Japanese physicist and Nobel laureate renowned for his pioneering work on quantum tunneling and the invention of the Esaki (tunnel) diode.
-
E.
Steven Weinberg
Steven Weinberg was an American theoretical physicist and Nobel laureate renowned for his pioneering work in unifying the electromagnetic and weak nuclear forces into the electroweak theory.
- 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: Masatoshi Koshiba Target entity description: Masatoshi Koshiba was a Japanese physicist and Nobel laureate renowned for his pioneering work in neutrino astronomy and the development of underground neutrino detectors.
-
A.
Hideki Yukawa
Hideki Yukawa was a Japanese theoretical physicist and Nobel laureate best known for proposing the meson theory of nuclear forces.
-
B.
Carlo Rubbia
Carlo Rubbia is an Italian physicist and Nobel laureate renowned for his pivotal role in the experimental discovery of the W and Z bosons at CERN.
-
C.
Sheldon Glashow
Sheldon Glashow is an American theoretical physicist and Nobel laureate renowned for his pioneering contributions to the electroweak theory that unifies electromagnetic and weak nuclear forces.
-
D.
Leo Esaki
Leo Esaki is a Japanese physicist and Nobel laureate renowned for his pioneering work on quantum tunneling and the invention of the Esaki (tunnel) diode.
-
E.
Steven Weinberg
Steven Weinberg was an American theoretical physicist and Nobel laureate renowned for his pioneering work in unifying the electromagnetic and weak nuclear forces into the electroweak theory.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese scientist
ⓘ
Nobel laureate ⓘ astrophysicist ⓘ human ⓘ particle physicist ⓘ physicist ⓘ |
| academicDegree | PhD in physics ⓘ |
| awardReceived |
Asahi Prize
ⓘ
Nobel Prize in Physics ⓘ Order of Culture ⓘ
surface form:
Order of Culture (Japan)
Person of Cultural Merit (Japan) ⓘ |
| birthDate | 1926-09-19 ⓘ |
| birthPlace | Toyohashi, Aichi Prefecture, Japan ⓘ |
| countryOfCitizenship | Japan ⓘ |
| deathDate | 2020-11-12 ⓘ |
| developed |
Kamiokande experiment
ⓘ
surface form:
Kamiokande neutrino detector
Kamiokande experiment ⓘ
surface form:
Super-Kamiokande neutrino detector
|
| educatedAt |
University of Rochester
ⓘ
University of Tokyo ⓘ |
| employer |
Institute for Cosmic Ray Research
ⓘ
University of Tokyo ⓘ |
| fieldOfWork |
astrophysics
ⓘ
neutrino astronomy ⓘ particle physics ⓘ |
| gender | male ⓘ |
| knownFor |
Kamiokande experiment
ⓘ
Kamiokande experiment ⓘ
surface form:
Super-Kamiokande experiment
detection of neutrinos from Supernova 1987A ⓘ development of underground neutrino detectors ⓘ pioneering work in neutrino astronomy ⓘ solar neutrino observations ⓘ |
| languageOfWorkOrName | Japanese ⓘ |
| memberOf | Japan Academy ⓘ |
| name | Masatoshi Koshiba self-link ⓘ |
| nativeName | 小柴 昌俊 ⓘ |
| NobelPrizeCategory | Physics ⓘ |
| NobelPrizeMotivation | for pioneering contributions to astrophysics, in particular for the detection of cosmic neutrinos ⓘ |
| NobelPrizeYear | 2002 ⓘ |
| notableAchievement |
establishing neutrino astronomy as an observational science
ⓘ
first real-time detection of solar neutrinos ⓘ |
| positionHeld |
professor at the University of Tokyo
ⓘ
professor emeritus at the University of Tokyo ⓘ |
| researchInterest |
cosmic rays
ⓘ
neutrino oscillations ⓘ solar neutrinos ⓘ |
| sharedNobelPrizeWith |
Raymond Davis Jr.
ⓘ
Riccardo Giacconi ⓘ |
| workLocation | Kamioka Observatory, Gifu Prefecture, Japan ⓘ |
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: Masatoshi Koshiba Description of subject: Masatoshi Koshiba was a Japanese physicist and Nobel laureate renowned for his pioneering work in neutrino astronomy and the development of underground neutrino detectors.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Kamioka Observatory