Original sentence: The Old Man & the Gun is a 2018 American film written and directed by David Lowery and, as per an opening title card the film, is "mostly a true story" based on the life of Forrest Tucker, a career criminal and prison escape artist
Edited sentence: The Old Man & the Gun is a 2018 American film written and directed by David Lowery and very loosely based on the true-life story of Forrest Tucker, a career criminal and prison escape artist