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It also revived its claim that the U . S . military keeps many nuclear weapons in South Korea , turning the country into ` ` the biggest nuclear advance base in the Far East . ' '
 It, its, U . S, South Korea, the country, ` ` the biggest nuclear advance base in the Far East, the U . S . military, the Far East, many nuclear weapons, nuclear, nuclear
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 It, its, U . S, South Korea, the country, ` ` the biggest nuclear advance base in the Far East, the U . S . military, the Far East, many nuclear weapons, nuclear, nuclear