Dogs play with stick
Dogs are playing with a stick they found.
Just because Dogs play with stick does not imply that they are playing with a stick they found.
exists e1 x1 x2.(with(e1,x2) & n_stick(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1))
exists e2 e1 x1 x2 x3.(with(e1,x2) & Theme(e2,x3) & Actor(e2,x1) & v_find(e2) & (x2 = x3) & n_thing(x1) & n_stick(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1))