Complex sentence: The movie is based on the book, "Act of Vengeance" by Trevor Armbrister, a fact-based story about the corruption that occurred during the United Mine Workers' presidential elections in 1969.
Split into simpler sentences: The movie is based on the book by Trevor Armbrister, "Act of Vengeance". It is a fact-based story about the corruption that occurred during the United Mine Workers' presidential elections in 1969.