A snowboarder jumps high over the snowy hill.
A skiier is trying not to fall.
Either a snowboarder or skiier.
exists e1 p1 s1 x1 x2.(n_hill(x2) & a_snowy(s1) & Theme(s1,x2) & over(e1,x2) & exists s2.(Theme(s2,x1) & a_high(s2)) & Topic(e1,p1) & Actor(e1,x1) & v_jump(e1) & n_snowboarder(x1))
exists x1.(-exists e1 p1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2.(Actor(e2,x1) & v_fall(e2))) & n_skiier(x1))