a dog in a red jacket is running on the grass.
A dog is chasing after a ball.
Running on the grass does not necessarily mean chasing after a ball.
exists e1 s1 x1 x2 x3.(n_grass(x3) & on(e1,x3) & Actor(e1,x1) & v_run(e1) & in(x1,x2) & n_jacket(x2) & a_red(s1) & Theme(s1,x2) & n_dog(x1))
exists e1 x1 x2.(after(e1,x2) & n_ball(x2) & Actor(e1,x1) & v_chase(e1) & n_dog(x1))