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Michael Piller ( May 30 , 1948 – November 1 , 2005 ) was an American television scriptwriter and producer , who was most famous for his contributions to the Star Trek franchise .
 person: Piller; location: American
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: Piller; location: American