premise: Skateboarder jumps off a 5 ft cliff, performing a stunt.
hypothesis: A skateboarder is swimming with sharks.
explanation_1: The skateboarder can either jump or be swimming with the sharks.
explanation_2: If a skateboarder jumps off a cliff they are not swimming with sharks.
explanation_3: One can either jump of a cliff or go swimming with sharks.
premise_logic: exists e1 e2 s1 x1 x2 x3 x4.(ne_nam_skateboarder(x1) & for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_perform(e2) & n_stunt(x4) & a_off(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_cliff(x2) & of(x2,x3) & n_ft(x3) & n_date(x2) & a_date_day_05(x2) & a_date_day_05(x2))
hypothesis_logic: exists e1 x1 x2.(with(e1,x2) & n_shark(x2) & Actor(e1,x1) & v_swim(e1) & n_skateboarder(x1))
premise_sim: exists e1 e2 s1 x1 x2 x3 x4.(v_perform(e2) & v_jump(e1) & of(x2,x3) & ne_nam_skateboarder(x1) & n_stunt(x4) & n_ft(x3) & n_date(x2) & n_cliff(x2) & for(e1,e2) & a_off(s1) & a_date_day_05(x2) & Theme(e2,x4) & Theme(e1,x2) & Manner(e1,s1) & Actor(e2,x1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(with(e1,x2) & v_swim(e1) & n_skateboarder(x1) & n_shark(x2) & Actor(e1,x1))