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The same level of unrest or activism did not occur in the Republika Srpska , but hundreds of people also gathered in support of protests in the town of Banja Luka against its separate government .
 Republika Srpska, Banja Luka
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Republika Srpska, Banja Luka