premise: This person looks to be snowboarding on a very small pile of snow on a sunny cold day. hypothesis: timmy stares at the remains of Jimmy hoffa.
contradiction: A person snowboarding is not looking at the remains of Jimmy Hoffa.|contradiction: A person could be a male or a female.  Snowboarding in the snow is not the same as staring at remains. Timmy is a male person.|contradiction: If a person stares at the remains they can't also be snowboarding at the same time.