The dog is running around the cow.
A dog is laying down.
The dog is running, he cannot be laying down.
exists e1 x1 x2.(n_cow(x2) & n_dog(x1) & around(e1,x2) & Actor(e1,x1) & v_run(e1))
exists e1 s1 x1.(a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_lay(e1) & n_dog(x1))