The white dog brings a stick from the water.
A dog is playing fetch with his owner.
we don't know the dog is playing fetch with his owner.
exists e1 s1 x1 x2 x3.(n_water(x3) & n_dog(x1) & a_white(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_bring(e1) & from(x2,x3) & n_stick(x2))
exists e1 x1 x2 x3.(with(e1,x3) & n_owner(x3) & of(x3,x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_fetch(x2) & n_dog(x1))