A person jumping on their snowboard.
The boy is about to snowboard down the mountain
A boy is jumping on a snowboard over mountain
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_snowboard(x3) & of(x3,x1) & n_thing(x1) & Actor(e1,x2) & v_jump(e1) & (x1 = x2) & n_person(x1))
exists p1 s1 x1 x2.(n_mountain(x2) & n_boy(x1) & Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1 s2.(a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_snowboard(e1)))