The dog leaps over the fence in the park.
A dog crawls under a fence.
A dog can't leap over something and crawl under something at the same time.
exists e1 x1 x2 x3.(n_park(x3) & n_fence(x2) & n_dog(x1) & over(e1,x2) & in(x2,x3) & Actor(e1,x1) & v_leap(e1))
exists e1 x1 x2.(under(e1,x2) & n_fence(x2) & Actor(e1,x1) & v_crawl(e1) & n_dog(x1))