Two kids standing in a firetruck.
Two kids on a truck.
Two kids near a truck and firetruck.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_firetruck(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_kid(x1) & card_eq_2(x1))
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_truck(x2) & n_kid(x1) & card_eq_2(x1))