Three women in a vehicle are looking back and smiling.
Three women smile at the car behind them.
Not all vehicles have another car behind them at all times.
exists e1 e2 s1 x1 x2 x3 x4.(Actor(e2,x3) & v_smile(e2) & in(x3,x4) & n_vehicle(x4) & n_woman(x3) & card_eq_3(x3) & a_back(s1) & Manner(e1,s1) & Actor(e1,x1) & v_look(e1) & in(x1,x2) & n_vehicle(x2) & n_woman(x1) & card_eq_3(x1))
exists e1 x1 x2.(n_car(x2) & at(e1,x2) & behind(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_smile(e1) & n_woman(x1) & card_eq_3(x1))