premise: A man in swimming trunks plays in the ocean's waves.
hypothesis: A man is surfing out on the ocean.
explanation_1: He may not be surfing on the waves.
explanation_2: Not everyone on ocean waves are surfing.
explanation_3: Surfing is not the only way to play in the ocean.
premise_logic: exists e1 x1 x2 x3 x4 x5.(n_wave(x5) & of(x5,x4) & n_ocean(x4) & in(e1,x5) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & n_trunk(x2) & of(x2,x3) & n_swimming(x3) & n_man(x1))
hypothesis_logic: exists e1 s1 x1 x2.(n_ocean(x2) & a_out(s1) & Manner(e1,s1) & on(e1,x2) & Actor(e1,x1) & v_surf(e1) & n_man(x1))