Question: Who led the real-life Rebellion that the film 'North West Mounted Police' is based on?
Sentence (from "North West Mounted Police (film)"): Written by Alan Le May, Jesse Lasky, Jr., and C. Gardner Sullivan, and based on the 1938 novel "The Royal Canadian Mounted Police" by R. C. Fetherstonhaugh, the film is about a Texas Ranger who joins forces with the North-West Mounted Police to put down a rebellion in the north-west prairies of Canada.
Relevant evidence: Yes