A dog jumps over a creek.
The creek is shallow
Not all creeks are shallow.
exists e1 x1 x2.(over(e1,x2) & n_creek(x2) & Actor(e1,x1) & v_jump(e1) & n_dog(x1))
exists s1 x1.(n_creek(x1) & Theme(s1,x1) & a_shallow(s1))