A man with a dog.
A man and his dog are waiting for something.
Just because there is A man with a dog does not mean they are waiting.
exists x1 x2.(a_topic(x1) & with(x1,x2) & n_dog(x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(for(e1,x4) & n_thing(x4) & Actor(e1,x1) & v_wait(e1) & subset_of(x3,x1) & n_dog(x3) & of(x3,x2) & n_male(x2) & subset_of(x2,x1) & n_man(x2))