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The first capital of Serbian Vojvodina was in Sremski Karlovci , so city hall was also the Serbian Vojvodina main government building .
 Sremski Karlovci
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sremski Karlovci