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These are : Banja Luka , Mostar , Sarajevo , and East Sarajevo .
 Banja Luka, Mostar, Sarajevo, East, Sarajevo
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Banja Luka, Mostar, Sarajevo, East, Sarajevo