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Ljubodrag " Duci " Simonović ( ; born 1 January 1949 ) is a Serbia n retired basketball player and author .
 Ljubodrag, Simonović, 1, Serbia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ljubodrag, Simonović, 1, Serbia