A dog leaps over a man to catch a disc.
A dog jumps over a man to catch the Frisbee in a contest.
A disc may not be a Frisbee. A dog may catch a disc for reasons other than a contest.
exists e1 p1 x1 x2.(over(e1,x2) & Topic(x2,p1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_catch(e2) & n_disc(x3)) & n_man(x2) & Actor(e1,x1) & v_leap(e1) & n_dog(x1))
exists e1 p1 x1 x2 x3.(n_frisbee(x3) & over(e1,x2) & Topic(x2,p1) & exists e2 x4.(in(e2,x4) & n_contest(x4) & Theme(e2,x3) & Actor(e2,x2) & v_catch(e2)) & n_man(x2) & Actor(e1,x1) & v_jump(e1) & n_dog(x1))