A dog runs through shallow water.
A big dog runs through shallow water.
Just because a dog runs through shallow water doesn't mean that the dog is big.  The dog could be any size.
exists e1 s1 x1 x2.(through(e1,x2) & n_water(x2) & a_shallow(s1) & Theme(s1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))
exists e1 s1 s2 x1 x2.(through(e1,x2) & n_water(x2) & a_shallow(s2) & Theme(s2,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_big(s1) & Theme(s1,x1))