A man and a woman wait at a bus stop.
A man and a dog wait at a bus stop.
It is either a man and a woman or a man and a dog
exists s1 x1 x2 x3 x4 x5.(a_topic(s1) & subset_of(x2,s1) & at(x2,x4) & n_stop(x4) & of(x4,x5) & n_bus(x5) & n_wait(x2) & of(x2,x3) & n_woman(x3) & subset_of(x1,s1) & n_man(x1))
exists s1 x1 x2 x3 x4 x5.(a_topic(s1) & subset_of(x2,s1) & at(x2,x4) & n_stop(x4) & of(x4,x5) & n_bus(x5) & n_wait(x2) & of(x2,x3) & n_dog(x3) & subset_of(x1,s1) & n_man(x1))