premise: This man is surfing.
hypothesis: A man is wakeboarding.
explanation_1: He can't be surfing and wakeboarding at the same time.
premise_logic: exists e1 x1.(n_man(x1) & Actor(e1,x1) & v_surf(e1))
hypothesis_logic: exists e1 x1.(Actor(e1,x1) & v_wakeboard(e1) & n_man(x1))
premise_sim: exists e1 x1.(v_surf(e1) & n_man(x1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1.(v_wakeboard(e1) & n_man(x1) & Actor(e1,x1))