Man smoking on a couch.
a man smoking
The man is on a couch and is smoking.
exists x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_couch(x3) & n_smoking(x1) & of(x1,x2) & n_man(x2))
exists x1 x2.(a_topic(x1) & n_smoking(x1) & of(x1,x2) & n_man(x2))