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He returned to Panetolikos in January 2013 , and made his first-team debut on 21 April 2013 , playing against Thrasivoulos for the 2012-2013 Greek Football League .
 Panetolikos, Thrasivoulos
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Panetolikos, Thrasivoulos