premise: A man with a red shirt and long black hair plays the steel drums under a blue and white striped umbrella on a gray dock near a gray stone wall, while passersby and people seated at nearby tables listen. hypothesis: the man is at home excercising.
contradiction: He states a man plays the steel drums  on a gray dock near a gray stone wall, but then proceeds to state that the man is at home exercising. You can't be doing both in two different locations.