premise: skateboarder sliding down a ramp
hypothesis: A skateboarder is doing tricks for a competition.
explanation_1: A skateboarder can be at another event than doing tricks for a competition.
explanation_2: Just because a skateboarder slides down a ramp does not mean he is doing tricks for a competition.
explanation_3: skateboarder sliding down a ramp doesn't mean that he  is doing tricks for a competition.
premise_logic: exists e1 s1 x1 x2 x3.(a_topic(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_slide(e1) & n_ramp(x3) & (x1 = x2) & n_skateboarder(x1))
hypothesis_logic: exists e1 x1 x2 x3.(for(e1,x3) & n_competition(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & n_skateboarder(x1))
premise_sim: exists e1 s1 x1 x2 x3.(v_slide(e1) & n_skateboarder(x1) & n_ramp(x3) & a_topic(x1) & a_down(s1) & Theme(e1,x3) & Manner(e1,s1) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e1 x1 x2 x3.(v_do(e1) & n_trick(x2) & n_skateboarder(x1) & n_competition(x3) & for(e1,x3) & Theme(e1,x2) & Actor(e1,x1))