Generate a correct and concise answer for the question based on the words in the context.

Q: Context : Outwitting Trolls is a murder mystery written by William G. Tapply that takes place in Boston. 
Question : Which place does Outwitting Trolls exist in?

A: Boston
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Q: Context : La vie heureuse de Léopold Z (English: The Merry World of Léopold Z) is a 1965 comedy-drama by Gilles Carle that played a key role in efforts to create a popular national cinema in Quebec. 
Question : The main director of La vie heureuse de Léopold Z was who?

A: Gilles Carle
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Q: Context : In 1990, Top Hat was selected for preservation in the United States National Film Registry by the Library of Congress as being ``culturally, historically, or aesthetically significant''. 
Question : What award was received by Top Hat?

A:
National Film Registry
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