premise: A man is flexing his biceps while standing on a rooftop with multiple chimneys in the background.
hypothesis: He is hoping to impress his friends.
explanation_1: Not all men who flex their biceps are looking to impress their friends.
explanation_2: A man might flex his biceps without hoping to impress his friends.
explanation_3: A man does not need to flex his biceps in order to impress his friends.
premise_logic: exists e1 e2 s1 x1 x2 x3 x4 x5.(n_background(x5) & while(e1,e2) & in(e2,x5) & with(e2,x4) & n_chimney(x4) & a_multiple(s1) & Theme(s1,x4) & on(e2,x3) & n_rooftop(x3) & Actor(e2,x1) & v_stand(e2) & Theme(e1,x2) & Actor(e1,x1) & v_flex(e1) & n_biceps(x2) & of(x2,x1) & n_male(x1) & n_man(x1))
hypothesis_logic: exists e1 p1 x1 x2.(n_friend(x2) & of(x2,x1) & n_male(x1) & n_male(x1) & Topic(e1,p1) & Actor(e1,x1) & v_hope(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_impress(e2)))