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Park returned to South Korea in June 2010 for the filming of Hype Nation , while being represented by Digital Media Wire 's CEO and entertainment attorney Ned Sherman , and in July 2010 , Park signed a contract with SidusHQ , one of the largest agencies in South Korea , re-debuting as a solo singer and an actor .
 Korea, Digital Media Wire, SidusHQ, Korea
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Korea, Digital Media Wire, SidusHQ, Korea