A boy and a dog running on grass
A boy with his dog.
A boy is probably with his dog if they are doing the same thing.
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & on(e1,x4) & n_grass(x4) & Actor(e1,x3) & v_run(e1) & (x2 = x3) & n_dog(x2) & subset_of(x1,s1) & n_boy(x1))
exists x1 x2.(a_topic(x1) & with(x1,x2) & n_dog(x2) & of(x2,x1) & n_male(x1) & n_boy(x1))