There is a red truck behind the horses.
A firetruck parked behind two horses.
A firetruck is a very specific type of red truck. Two is a specific number of horses.
exists p1 x1 x3.(n_horse(x3) & exists s1 x2.((x1 = x2) & behind(x2,x3) & n_truck(x2) & a_red(s1) & Theme(s1,x2)))
exists e1 x1 x2 x3.(a_topic(x1) & behind(e1,x3) & n_horse(x3) & card_eq_2(x3) & Theme(e1,x2) & v_park(e1) & (x1 = x2) & n_firetruck(x1))