There is a red truck behind the horses.
A few horses raced against a red car.
There can be either a truck or a car.
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 s1 s2 x1 x2.(against(e1,x2) & n_car(x2) & a_red(s2) & Theme(s2,x2) & Actor(e1,x1) & v_race(e1) & n_horse(x1) & a_few(s1) & Theme(s1,x1))