Premise: X-Men: Days of Future Past . 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 .
Hypothesis: X-Men: Days of Future Past is fiction.
Label: ENTAILMENT