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Atuk ( Inuit for " Grandfather " ) is the name of an as-yet-unfilmed American film screenplay , intended to be a film adaptation based upon the 1963 novel The Incomparable Atuk by acclaimed Canadian author Mordecai Richler .
 person: Mordecai Richler
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: Mordecai Richler