A snowboarder flies through the air in front of leafless trees.
An person is riding a snowboard.
snowboard flies through the air infers that he is riding a snowboard
exists e1 s1 x1 x2 x3 x4.(n_air(x2) & in(e1,x3) & of(x3,x4) & n_tree(x4) & a_leafless(s1) & Theme(s1,x4) & n_front(x3) & through(e1,x2) & Actor(e1,x1) & v_fly(e1) & n_snowboarder(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_snowboard(x2) & n_person(x1))