People sitting on a bus at night.
There is a group of people in a car.
The people can either be on a bus or in a car.
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x4) & n_night(x4) & on(e1,x3) & n_bus(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists p1 x1 x2 x3 x4.((x1 = x2) & of(x2,x3) & in(x3,x4) & n_car(x4) & n_people(x3) & n_group(x2))