300567
After only half a season , in January 1999 , he was back to Serbia , this time , to play in Radnički Niš , and next in Hajduk Kula .
 Serbia, Radnički Niš, Hajduk Kula
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Serbia, Radnički Niš, Hajduk Kula