The horse on the right is red.
The horses are running.
There is no information on what the horse is doing - it may or may not be running.
exists s1 x1 x2.(n_right(x2) & n_horse(x1) & Theme(s1,x1) & a_red(s1) & on(x1,x2))
exists e1 x1.(n_horse(x1) & Actor(e1,x1) & v_run(e1))