A brown dog is chasing a ball on the grass
The dog is running in a park.
A dog can run in other places than in a park.
exists e1 s1 x1 x2 x3.(n_grass(x3) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_ball(x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_dog(x1) & in(e1,x2) & n_park(x2) & Actor(e1,x1) & v_run(e1))