327203
He still played for Rad Beograd before signing , in 1997 , with the former 1991 European and World Champions Red Star Belgrade , known in Serbian as FK Crvena Zvezda , where he stayed until 2000 .
 Rad Beograd, Red Star Belgrade, FK
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rad Beograd, Red Star Belgrade, FK