premise: A person rides his bicycle in the sand beside the ocean.
hypothesis: A person is falling off his bike.
explanation_1: One cannot be riding a bicycle and falling simultaneously.
explanation_2: If he is falling off the bike he no longer rides it.
explanation_3: A person cannot be riding and falling off of a bike at the same time.
premise_logic: exists e1 x1 x2 x3 x4.(n_ocean(x4) & n_sand(x3) & beside(e1,x4) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bicycle(x2) & of(x2,x1) & n_male(x1) & n_person(x1))
hypothesis_logic: exists e1 s1 x1 x2.(a_off(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_fall(e1) & n_bike(x2) & of(x2,x1) & n_male(x1) & n_person(x1))