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After having surgery to correct his tendinitis in 2013 , he was able to play guitar again and has returned to that role in the band since Abbath 's departure .
 person: Abbath
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: Abbath 
Answer:
 person: Abbath