A man in a brown vest and glasses plays with a brown dog.
A dog owner playing with his dog in a park.
A man that plays with a dog doesn't mean the dog is his dog and the dog is not necessarily in a park.
exists e1 s1 s2 x1 x2 x3 x4 x5.(with(e1,x5) & n_dog(x5) & a_brown(s2) & Theme(s2,x5) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & subset_of(x4,x2) & n_glass(x4) & subset_of(x3,x2) & n_vest(x3) & a_brown(s1) & Theme(s1,x3) & n_man(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_park(x4) & with(e1,x2) & n_dog(x2) & n_dog(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x3) & v_play(e1) & (x1 = x3) & n_owner(x1) & of(x1,x2))