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yugoslavia ' s new president , vojislav kostunica , is still having trouble consolidating his power .
 yugoslavia, yugoslavia ' s new president, vojislav kostunica, his
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 yugoslavia, yugoslavia ' s new president, vojislav kostunica, his