Claim: X-Men: Days of Future Past is a film based on Marvel Comics about the X-Men.
Evidence: The story , inspired by the 1981 Uncanny X-Men storyline `` Days of Future Past '' by Chris Claremont and John Byrne , focuses on two time periods , with Wolverine traveling back in time to 1973 to change history and prevent an event that results in doom for both humans and mutants.