A uniformed policeman with a dog.
There is a policeman playing fetch with a dog.
with doesn't always mean playing
exists s1 x1 x2.(a_topic(x1) & with(x1,x2) & n_dog(x2) & n_policeman(x1) & a_uniformed(s1) & Theme(s1,x1))
exists e1 p1 x1 x2 x3.(with(e1,x3) & n_dog(x3) & Actor(e1,x1) & v_fetch(e1) & exists x4 x5.((x2 = x4) & n_playing(x4) & of(x4,x5) & n_policeman(x5)) & (x1 = x2))