Three people sit on the curb in a parking lot.
The people sit in a car.
If they are on the curb, they are not in a car.
exists e1 x1 x2 x3 x4.(n_curb(x2) & in(e1,x3) & n_lot(x3) & of(x3,x4) & n_parking(x4) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_3(x1))
exists e1 x1 x2.(n_people(x1) & in(e1,x2) & n_car(x2) & Actor(e1,x1) & v_sit(e1))