premise: A skier catches air.
hypothesis: A man is skiing on a mountain.
explanation_1: There are many places where a skier can catch air not just while skiing on a mountain.
premise_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_catch(e1) & n_air(x2) & n_skier(x1))
hypothesis_logic: exists e1 x1 x2.(on(e1,x2) & n_mountain(x2) & Actor(e1,x1) & v_ski(e1) & n_man(x1))
premise_sim: exists e1 x1 x2.(v_catch(e1) & n_skier(x1) & n_air(x2) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_ski(e1) & on(e1,x2) & n_mountain(x2) & n_man(x1) & Actor(e1,x1))