Kamioka Observatory, Gifu Prefecture, Japan
E190918
Kamioka Observatory in Gifu Prefecture, Japan is a world-renowned underground physics research facility best known for its neutrino detection experiments such as Super-Kamiokande.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Kamioka Observatory | 3 |
| Kamioka | 2 |
| Kamioka Observatory, Gifu Prefecture, Japan canonical | 1 |
| Kamioka Underground Observatory | 1 |
| Kamioka, Gifu, Japan | 1 |
| Super-Kamiokande | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1690132 — 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: Kamioka Observatory, Gifu Prefecture, Japan Context triple: [Masatoshi Koshiba, workLocation, Kamioka Observatory, Gifu Prefecture, Japan]
-
A.
Kashiwazaki, Niigata Prefecture, Japan
Kashiwazaki is a coastal city in Niigata Prefecture, Japan, known for its role in regional industry and as the site of one of the world’s largest nuclear power stations.
-
B.
Nagaoka, Niigata, Japan
Nagaoka is a city in Niigata Prefecture, Japan, known for its historic role in the Boshin War, its postwar reconstruction, and one of Japan’s most famous summer fireworks festivals.
-
C.
Tsukuba, Ibaraki Prefecture, Japan
Tsukuba, in Ibaraki Prefecture, Japan, is a planned science city renowned as a major hub for research institutions and advanced technology development.
-
D.
Omihachiman, Japan
Omihachiman is a historic city in Shiga Prefecture, Japan, known for its preserved merchant quarters, canals, and traditional architecture along the eastern shore of Lake Biwa.
-
E.
Tsuyama, Japan
Tsuyama, Japan is a historic city in Okayama Prefecture known for its well-preserved castle ruins, traditional townscape, and famous cherry blossom viewing spots.
- 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: Kamioka Observatory, Gifu Prefecture, Japan Target entity description: Kamioka Observatory in Gifu Prefecture, Japan is a world-renowned underground physics research facility best known for its neutrino detection experiments such as Super-Kamiokande.
-
A.
Kashiwazaki, Niigata Prefecture, Japan
Kashiwazaki is a coastal city in Niigata Prefecture, Japan, known for its role in regional industry and as the site of one of the world’s largest nuclear power stations.
-
B.
Nagaoka, Niigata, Japan
Nagaoka is a city in Niigata Prefecture, Japan, known for its historic role in the Boshin War, its postwar reconstruction, and one of Japan’s most famous summer fireworks festivals.
-
C.
Tsukuba, Ibaraki Prefecture, Japan
Tsukuba, in Ibaraki Prefecture, Japan, is a planned science city renowned as a major hub for research institutions and advanced technology development.
-
D.
Omihachiman, Japan
Omihachiman is a historic city in Shiga Prefecture, Japan, known for its preserved merchant quarters, canals, and traditional architecture along the eastern shore of Lake Biwa.
-
E.
Tsuyama, Japan
Tsuyama, Japan is a historic city in Okayama Prefecture known for its well-preserved castle ruins, traditional townscape, and famous cherry blossom viewing spots.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
neutrino observatory
ⓘ
underground physics research facility ⓘ |
| affiliatedWith | University of Tokyo ⓘ |
| alsoKnownAs |
Kamioka Observatory, Gifu Prefecture, Japan
ⓘ
surface form:
Kamioka Underground Observatory
|
| contributedTo | discovery of neutrino oscillations ⓘ |
| country | Japan ⓘ |
| depthBelowSurface | about 1000 meters ⓘ |
| environment | low-background underground laboratory ⓘ |
| fieldOfResearch |
astroparticle physics
ⓘ
cosmic rays ⓘ gravitational waves ⓘ neutrino physics ⓘ |
| hasDetectorType |
laser interferometer gravitational-wave detector
ⓘ
liquid scintillator detector ⓘ water Cherenkov detector ⓘ |
| hasExperiment |
CANDLES
ⓘ
KAGRA gravitational-wave detector ⓘ
surface form:
KAGRA
KamLAND experiment ⓘ
surface form:
KamLAND
Kamiokande experiment ⓘ
surface form:
Kamiokande
NEWAGE ⓘ Kamiokande experiment ⓘ
surface form:
Super-Kamiokande
XMASS ⓘ |
| hostedNobelPrizeRelatedWorkOf |
Masatoshi Koshiba
ⓘ
Takaaki Kajita ⓘ |
| knownFor |
KAGRA gravitational-wave detector
ⓘ
KamLAND experiment ⓘ Kamiokande experiment ⓘ Super-Kamiokande Collaboration ⓘ
surface form:
Super-Kamiokande experiment
atmospheric neutrino observations ⓘ neutrino detection experiments ⓘ neutrino oscillation studies ⓘ solar neutrino observations ⓘ |
| languageOfName | Japanese ⓘ |
| locatedIn |
Chūbu region
ⓘ
Gifu Prefecture NERFINISHED ⓘ Hida Mountains ⓘ
surface form:
Hida
Honshu ⓘ Japan ⓘ Kamioka Observatory, Gifu Prefecture, Japan self-linksurface differs ⓘ
surface form:
Kamioka
|
| locatedInStructure | Kamioka mine ⓘ |
| operatedBy |
Institute for Cosmic Ray Research
ⓘ
surface form:
Institute for Cosmic Ray Research, University of Tokyo
|
| overburden | about 2700 meters water equivalent ⓘ |
| partOf |
Institute for Cosmic Ray Research
ⓘ
surface form:
Institute for Cosmic Ray Research facilities
|
| purpose | detection of rare particle interactions ⓘ |
| shieldingMaterial | rock overburden ⓘ |
| usedFor |
geoneutrino observations
ⓘ
proton decay searches ⓘ reactor neutrino measurements ⓘ supernova neutrino detection ⓘ |
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: Kamioka Observatory, Gifu Prefecture, Japan Description of subject: Kamioka Observatory in Gifu Prefecture, Japan is a world-renowned underground physics research facility best known for its neutrino detection experiments such as Super-Kamiokande.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Super-Kamiokande
this entity surface form:
Kamioka, Gifu, Japan
this entity surface form:
Kamioka Observatory
this entity surface form:
Kamioka
this entity surface form:
Kamioka Observatory
Kamioka Observatory, Gifu Prefecture, Japan
→
locatedIn
→
Kamioka Observatory, Gifu Prefecture, Japan
self-linksurface differs
ⓘ
subject surface form:
Kamioka Observatory
this entity surface form:
Kamioka
Kamioka Observatory, Gifu Prefecture, Japan
→
alsoKnownAs
→
Kamioka Observatory, Gifu Prefecture, Japan
ⓘ
subject surface form:
Kamioka Observatory
this entity surface form:
Kamioka Underground Observatory
this entity surface form:
Kamioka Observatory