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Slobodan Obradov ( Serbian Cyrillic : Слободан Обрадов ) ( born November 26 , 1918 in Senta , Serbia , then Yugoslavia ) is a Serbian physician .
 Slobodan Obradov, Senta, Serbia, Yugoslavia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Slobodan Obradov, Senta, Serbia, Yugoslavia