A black dog is looking through the fence.
A brown dog is looking over the fence
A dog cannot be both a black dog and a brown dog.
exists e1 s1 x1 x2.(n_fence(x2) & through(e1,x2) & Actor(e1,x1) & v_look(e1) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_fence(x2) & over(e1,x2) & Actor(e1,x1) & v_look(e1) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))