A dog bounds into the water.
The dog is retrieving a frisbee from the water.
The dog bounding into the water isn't necessarily retrieving a frisbee.
exists e1 x1 x2.(n_water(x2) & into(e1,x2) & Actor(e1,x1) & v_bound(e1) & n_dog(x1))
exists e1 x1 x2 x3.(n_water(x3) & n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_retrieve(e1) & from(x2,x3) & n_frisbee(x2))