A dog bounds across the green grass.
A dog is chasing a squirrel around the grass.
A dog is not chasing a squirrel because it is bounding through grass.
exists e1 s1 x1 x2.(n_grass(x2) & a_green(s1) & Theme(s1,x2) & across(e1,x2) & Actor(e1,x1) & v_bound(e1) & n_dog(x1))
exists e1 x1 x2 x3.(n_grass(x3) & around(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_squirrel(x2) & n_dog(x1))