premise: A person is surfing a big wave.
hypothesis: A person is sitting in a chair.
explanation_1: The person cannot simultaneously be surfing and sitting
explanation_2: Surfing a wave cannot be simultaneously done with sitting in a chair and the being located on a wave is different from being in a chair.
explanation_3: One can either be surfing or sitting in a chair, but cannot be doing both at the same time.
premise_logic: exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_surf(e1) & n_wave(x2) & a_big(s1) & Theme(s1,x2) & n_person(x1))
hypothesis_logic: exists e1 x1 x2.(in(e1,x2) & n_chair(x2) & Actor(e1,x1) & v_sit(e1) & n_person(x1))
premise_sim: exists e1 s1 x1 x2.(v_surf(e1) & n_wave(x2) & n_person(x1) & a_big(s1) & Theme(s1,x2) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_sit(e1) & n_person(x1) & n_chair(x2) & in(e1,x2) & Actor(e1,x1))