Fukushima exclusion zone
E790337
The Fukushima exclusion zone is a restricted area surrounding the Fukushima Daiichi Nuclear Power Plant, established after the 2011 nuclear disaster due to high levels of radioactive contamination.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fukushima exclusion zone canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9296255 — 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: Fukushima exclusion zone Context triple: [Ōkuma, Fukushima Prefecture, partOf, Fukushima exclusion zone]
-
A.
Fukushima
Fukushima is a city in Japan’s Tohoku region, known as the capital of Fukushima Prefecture and for its role in agriculture, hot springs, and regional administration.
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B.
Chernobyl Exclusion Zone
The Chernobyl Exclusion Zone is a heavily contaminated, restricted area surrounding the Chernobyl Nuclear Power Plant, established after the 1986 disaster to limit radiation exposure and monitor environmental and health impacts.
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C.
Belarusian Exclusion Zone
The Belarusian Exclusion Zone is a heavily contaminated, largely uninhabited area in southern Belarus established after the 1986 Chernobyl nuclear disaster to restrict access and limit radiation exposure.
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D.
Fukushima Daiichi Nuclear Power Plant
Fukushima Daiichi Nuclear Power Plant is a coastal Japanese nuclear power station in Ōkuma, Fukushima Prefecture, widely known as the site of the 2011 reactor meltdowns following a massive earthquake and tsunami.
-
E.
Minamigata area
Minamigata area is a district in Osaka, Japan, known as a local residential and commercial neighborhood served by Nishinakajima-Minamigata Station.
- 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: Fukushima exclusion zone Target entity description: The Fukushima exclusion zone is a restricted area surrounding the Fukushima Daiichi Nuclear Power Plant, established after the 2011 nuclear disaster due to high levels of radioactive contamination.
-
A.
Fukushima
Fukushima is a city in Japan’s Tohoku region, known as the capital of Fukushima Prefecture and for its role in agriculture, hot springs, and regional administration.
-
B.
Chernobyl Exclusion Zone
The Chernobyl Exclusion Zone is a heavily contaminated, restricted area surrounding the Chernobyl Nuclear Power Plant, established after the 1986 disaster to limit radiation exposure and monitor environmental and health impacts.
-
C.
Belarusian Exclusion Zone
The Belarusian Exclusion Zone is a heavily contaminated, largely uninhabited area in southern Belarus established after the 1986 Chernobyl nuclear disaster to restrict access and limit radiation exposure.
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D.
Fukushima Daiichi Nuclear Power Plant
Fukushima Daiichi Nuclear Power Plant is a coastal Japanese nuclear power station in Ōkuma, Fukushima Prefecture, widely known as the site of the 2011 reactor meltdowns following a massive earthquake and tsunami.
-
E.
Minamigata area
Minamigata area is a district in Osaka, Japan, known as a local residential and commercial neighborhood served by Nishinakajima-Minamigata Station.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
disaster-affected area
ⓘ
evacuation zone ⓘ exclusion zone ⓘ radioactively contaminated area ⓘ |
| administeredBy |
Fukushima Prefectural Government
NERFINISHED
ⓘ
Government of Japan NERFINISHED ⓘ |
| allows |
decontamination work
ⓘ
infrastructure maintenance ⓘ limited supervised visits ⓘ |
| appliesTo | areas with annual radiation dose exceeding 20 millisieverts ⓘ |
| comparedTo | Chernobyl Exclusion Zone NERFINISHED ⓘ |
| country | Japan ⓘ |
| createdAfter |
2011 Tōhoku earthquake and tsunami
ⓘ
Fukushima Daiichi nuclear disaster ⓘ |
| environmentalImpact |
forest and wildlife exposure to radiation
ⓘ
long-term soil contamination ⓘ |
| hasPart |
difficult-to-return zones
ⓘ
evacuation order cancellation preparation zones ⓘ restricted residence zones ⓘ |
| locatedIn |
Fukushima Prefecture
NERFINISHED
ⓘ
Futaba NERFINISHED ⓘ Futaba District NERFINISHED ⓘ Honshu ⓘ Iitate NERFINISHED ⓘ Katsurao NERFINISHED ⓘ Kawamata NERFINISHED ⓘ Minamisoma NERFINISHED ⓘ Namie NERFINISHED ⓘ Okuma NERFINISHED ⓘ Tamura NERFINISHED ⓘ Tomioka NERFINISHED ⓘ Tōhoku region NERFINISHED ⓘ |
| mainHazard |
cesium-134 contamination
ⓘ
cesium-137 contamination ⓘ plutonium traces ⓘ strontium contamination ⓘ |
| originalRadius |
12 miles
ⓘ
20 kilometres ⓘ |
| populationStatus |
largely evacuated
ⓘ
long-term displaced residents ⓘ |
| reasonForRestriction |
high levels of radioactive contamination
ⓘ
risk of radiation exposure ⓘ |
| regulates |
entry of journalists
ⓘ
entry of researchers ⓘ entry of residents ⓘ entry of workers ⓘ |
| startTime | 2011 ⓘ |
| subjectTo |
gradual lifting of evacuation orders in some areas
ⓘ
periodic re-evaluation of radiation levels ⓘ |
| surrounds | Fukushima Daiichi Nuclear Power Plant 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: Fukushima exclusion zone Description of subject: The Fukushima exclusion zone is a restricted area surrounding the Fukushima Daiichi Nuclear Power Plant, established after the 2011 nuclear disaster due to high levels of radioactive contamination.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.