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Government officials have said that there was limited damage as a result of the explosion , and efforts to cool the reactor would go on , but nuclear industry executives in Japan have said that the situation is far worse , and other unnamed officials said the containment structure had been damaged , but did not say to what extent .
 Japan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Japan