premise: A shirtless man in shorts is fishing while standing on some rocks.
hypothesis: A man is swimming in the lake.
explanation_1: Swimming and fishing cannot be done at the same time.
explanation_2: If a man is fishing on some rocks he is not swimming in the lake.
explanation_3: where you are fishing you usually are standing not swimming
premise_logic: exists e1 e2 s1 x1 x2 x3.(while(e1,e2) & on(e2,x3) & n_rock(x3) & Actor(e2,x1) & v_stand(e2) & Actor(e1,x1) & v_fish(e1) & in(x1,x2) & n_shorts(x2) & n_man(x1) & a_shirtless(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 x1 x2.(n_lake(x2) & in(e1,x2) & Actor(e1,x1) & v_swim(e1) & n_man(x1))