Task: Question Answering
Input (English): Context : Produced by the National Film Board of Canada Cree Hunters of Mistassini received the award for Best Documentary over 30 minutes at the Canadian Film Awards as well as the Robert Flaherty Award for best one-off documentary from the British Academy of Film and Television Arts. 
Question : What production company was involved in Cree Hunters of Mistassini?
Output (English): National Film Board of Canada