A man in a jacket is standing on a bus.
A man standing on the bus.
A man in a jacket could mean he is on the bus.
exists e1 x1 x2 x3.(on(e1,x3) & n_bus(x3) & Actor(e1,x1) & v_stand(e1) & in(x1,x2) & n_jacket(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_bus(x3) & a_topic(x1) & on(e1,x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_man(x1))