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He also starred as Sam Houser , one of the founders of Rockstar Games , in the biographical drama film " The Gamechangers " .
 person: Sam Houser; organization: Rockstar Games
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Sam Houser; organization: Rockstar Games