Boy playing with a truck.
A boy is driving a truck.
Either the boy is playing with a truck of driving the truck.
exists x1 x2 x3.(a_topic(x1) & with(x1,x3) & n_truck(x3) & n_playing(x1) & (x1 = x2) & ne_nam_boy(x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_truck(x2) & n_boy(x1))