A man is sitting on a couch under an expressway ledge.
A homeless man is sleeping under the highway bridge.
The man does not need to be homeless to sit on the couch, and sitting on the couch does not also imply he is sleeping.
exists e1 x1 x2 x3 x4.(under(e1,x3) & n_ledge(x3) & of(x3,x4) & n_expressway(x4) & on(e1,x2) & n_couch(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 s1 x1 x2 x3.(n_bridge(x2) & of(x2,x3) & n_highway(x3) & under(e1,x2) & Actor(e1,x1) & v_sleep(e1) & n_man(x1) & a_homeless(s1) & Theme(s1,x1))