A dog is galloping through the grass.
The dog is chasing a rabbit.
A galloping dog is not necessarily chasing.
exists e1 x1 x2.(n_grass(x2) & through(e1,x2) & Actor(e1,x1) & v_gallop(e1) & n_dog(x1))
exists e1 x1 x2.(n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_rabbit(x2))