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Czech President Vaclav Klaus on Monday appointed Miroslav Kostelka as the country ' s new defense minister to replace Jaroslav Tvrdik who resigned from the post in late May .
 Czech, the country, Czech President, Czech President Vaclav Klaus, Miroslav Kostelka, the country ' s new defense minister, Jaroslav Tvrdik who resigned from the post in late May, who
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:
 Czech, the country, Czech President, Czech President Vaclav Klaus, Miroslav Kostelka, the country ' s new defense minister, Jaroslav Tvrdik who resigned from the post in late May, who