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Prison gangs Hispanic Black Caucasian Latent prison management function Christian Parenti argues in his book Lockdown America that prison gangs serve a convenient function for the prison establishment and officers .
 person: Christian Parenti
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: Christian Parenti 
Answer:
 person: Christian Parenti