A girl is sitting on a guy's lap at a party.
The two are dating.
Not all girls and guys are dating.
exists e1 x1 x2 x3 x4.(at(e1,x4) & n_party(x4) & on(e1,x3) & n_lap(x3) & of(x3,x2) & n_guy(x2) & Actor(e1,x1) & v_sit(e1) & n_girl(x1))
exists e1 x1.(n_thing(x1) & card_eq_2(x1) & Actor(e1,x1) & v_date(e1))