context: A man is flexing his biceps while standing on a rooftop with multiple chimneys in the background.
hypothesis: There is a better than even chance that he is hoping to impress his friends.
valid_hypothesis: There is a better than even chance that he is hoping to impress his friends.
invalid_hypothesis: It is improbable that he is hoping to impress his friends.
hypothesis_assertion: He is hoping to impress his friends.