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History The band was formed during the summer of 1979 , when Đorđe Pilipović ( bass guitar , vocals ) and Milan Ćirić ( guitar , vocals ) met at Krk where they both performed with their own bands .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
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