258890
It has quickly grown in size and popularity : in 2004 , it attracted over 75,000 foreign visitors to Belgrade and in 2005 it was the second most visited festival in Serbia with 300,000 visitors .
 Belgrade, 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:
 Belgrade, Serbia