premise: Expert snowboard is trying a new trick.
hypothesis: The person is snowboarding.
explanation_1: Doing snowboard trick implies snowboarding
explanation_2: Expert is person, and new trick implies snowboarding.
explanation_3: A person snowboarding is a snowboard (er).
premise_logic: exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_try(e1) & n_trick(x3) & a_new(s1) & Theme(s1,x3) & n_snowboard(x1) & (x1 = x2) & ne_nam_expert(x2))
hypothesis_logic: exists e1 x1.(n_person(x1) & Actor(e1,x1) & v_snowboard(e1))