Running dog and cow in fenced area.
The dog is chasing the cow.
Running dog and cow aren't necessarily chasing each other.
exists e1 s1 x1 x2 x3 x4 x5.(in(e1,x5) & n_area(x5) & a_fenced(s1) & Theme(s1,x5) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_cow(x4) & n_dog(x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_thing(x1))
exists e1 x1 x2.(n_cow(x2) & n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1))