Two men sit on a couch and talk.
Two men are sitting and talking about their wives.
There's no indication of what they're talking about they could be talking about anything
exists e1 x1 x2 x3 x4.(on(e1,x2) & n_talk(x4) & n_couch(x3) & subset_of(x4,x2) & subset_of(x3,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))
exists e2 e1 x1 x2 x3.(about(e2,x3) & n_wife(x3) & of(x3,x1) & n_thing(x1) & Actor(e2,x2) & v_talk(e2) & n_man(x2) & card_eq_2(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))