premise: A surfer is riding a wave in a large body of water.
hypothesis: The surfer is surfing.
explanation_1: The surfer riding a wave must be surfing.
explanation_2: Surfer implies riding a wave.
explanation_3: A surfer is riding wave in a large body of water means the surfer is surfing.
premise_logic: exists e1 s1 x1 x2 x3 x4.(in(e1,x3) & of(x3,x4) & n_water(x4) & n_body(x3) & a_large(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_wave(x2) & n_surfer(x1))
hypothesis_logic: exists e1 x1.(n_surfer(x1) & Actor(e1,x1) & v_surf(e1))
premise_sim: exists e1 s1 x1 x2 x3 x4.(v_ride(e1) & of(x3,x4) & n_wave(x2) & n_water(x4) & n_surfer(x1) & n_body(x3) & in(e1,x3) & a_large(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1.(v_surf(e1) & n_surfer(x1) & Actor(e1,x1))