A dog leaps high to catch a ball.
A cat catching a Frisbee.
A dog is not a cat, and a ball is different than a Frisbee.
exists e1 p1 p2 x1 x2.(Topic(e1,p2) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_catch(e2) & n_ball(x3)) & exists s1.(Theme(s1,x2) & a_high(s1)) & Topic(e1,p1) & Actor(e1,x2) & v_leap(e1) & n_dog(x2) & n_dog(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_catch(e1) & n_frisbee(x3) & (x1 = x2) & n_cat(x1))