premise: Two young men in costumes, one with a beard and one as a pirate, are posing in a hallway in front of lockers. hypothesis: Two men, disguised as pirates, have infiltrated a local school to kill students in a mass shooting.
contradiction: Two young men in costumes, one with a beard and one as a pirate, are posing in a hallway in front of lockers or they have infiltrated a local school to kill students in a mass shooting.