premise: The surfer crouches low and rides the wave.
hypothesis: The wave is huge.
explanation_1: Not all waves are huge
explanation_2: Not all waves surfers ride are huge
explanation_3: Not all waves are huge.
premise_logic: exists e2 e1 p1 x1 x2.(n_wave(x2) & n_surfer(x1) & Theme(e2,x2) & Actor(e2,x1) & v_ride(e2) & exists s1.(Theme(s1,x1) & a_low(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_crouch(e1))
hypothesis_logic: exists s1 x1.(n_wave(x1) & Theme(s1,x1) & a_huge(s1))