A couple sits on a car.
Some kids are throwing rocks at an old abandoned car.
There can either be a couple or some kids.
exists e1 x1 x2.(on(e1,x2) & n_car(x2) & Actor(e1,x1) & v_sit(e1) & n_couple(x1))
exists e1 s1 s2 x1 x2 x3.(at(e1,x3) & n_car(x3) & a_abandoned(s2) & Theme(s2,x3) & a_old(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_rock(x2) & n_kid(x1))