premise: Boy does skateboard trick.
hypothesis: A child is skateboarding.
explanation_1: If the boy does a trick on a skateboard, he must be skateboarding.
premise_logic: exists e1 x1 x2.(ne_nam_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_skateboard(e1) & n_trick(x2))
hypothesis_logic: exists e1 x1.(Actor(e1,x1) & v_skateboard(e1) & n_child(x1))
premise_sim: exists e1 x1 x2.(v_skateboard(e1) & ne_nam_boy(x1) & n_trick(x2) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1.(v_skateboard(e1) & n_child(x1) & Actor(e1,x1))