Premise: The Dark Knight (film) . Featuring the DC Comics character Batman , the film is the second part of Nolan 's The Dark Knight Trilogy and a sequel to 2005 's Batman Begins , starring an ensemble cast including Christian Bale , Michael Caine , Heath Ledger , Gary Oldman , Aaron Eckhart , Maggie Gyllenhaal and Morgan Freeman .
Hypothesis: The Dark Knight features the character Batman as the main protagonist.
Label: ENTAILMENT