Man smoking on a couch.
A woman gardening
one is a man. one is a female. smoking and gardening are different activities.
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_gardening(x1) & of(x1,x2) & n_woman(x2))