The magnificant bird flies low over the water.
Nothing is flying
There could very well be a magnificent bird bird that flies over water, and a the very same time there wouln't be any thing flying at all.
exists e1 p1 s1 x1 x2.(n_water(x2) & n_bird(x1) & a_magnificant(s1) & Theme(s1,x1) & over(e1,x2) & exists s2.(Theme(s2,x1) & a_low(s2)) & Topic(e1,p1) & Actor(e1,x1) & v_fly(e1))
-exists e1 x1.(Actor(e1,x1) & v_fly(e1) & n_thing(x1))