A man in a cowboy hat rides a horse.
The man is in a car.
Horse and car are different.
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & n_horse(x4) & in(x1,x2) & n_hat(x2) & of(x2,x3) & n_cowboy(x3) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.(in(x1,x2) & n_car(x2)))