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They later co-wrote an album of parody songs titled My Son , the Copycat ( a parody of Allan Sherman 's albums ) and the book , Speak When You Hear the Beep .
 person: Allan Sherman
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: Allan Sherman