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On September 22 , 2010 , Ballantine Books revealed the cover of the prequel novel , also by Schreiber , called Red Harvest Plot The Imperial prison barge Purge , temporary home to five hundred of the galaxy 's most ruthless killers , rebels , scoundrels and thieves , breaks down in a distant , uninhabited part of space .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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