6359
He then moved to the youth team of Red Star Belgrade following his to FK Srem and became professional .
 organization: Red Star Belgrade; organization: FK Srem
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Red Star Belgrade; organization: FK Srem