premise: a lone surfboarder on a white surfboard flying through the air over a wave
hypothesis: A lone surfboarder on a a white surfboard is riding the waves.
explanation_1: Riding the waves is mentioned in both sentences
explanation_2: "riding the waves." is a rephrasing of "flying through the air over a wave. "
explanation_3: A surfboard is for riding the waves.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4 x5.(n_air(x4) & a_topic(x1) & on(x1,x2) & over(e1,x5) & n_wave(x5) & through(e1,x4) & Actor(e1,x3) & v_fly(e1) & (x2 = x3) & n_surfboard(x2) & a_white(s2) & Theme(s2,x2) & n_surfboarder(x1) & a_lone(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 s1 s2 x1 x2 x3 x4.(n_wave(x4) & Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & on(x1,x2) & Time(x2,x3) & n_a(x3) & n_surfboard(x2) & a_white(s2) & Theme(s2,x2) & n_surfboarder(x1) & a_lone(s1) & Theme(s1,x1))