A dog swimming with a stick in its mouth.
a dog swimming in the ocean
Not all dog are swimming in the ocean.
exists x1 x2 x3 x4.(a_topic(x1) & with(x1,x3) & in(x3,x4) & n_mouth(x4) & of(x4,x1) & n_thing(x1) & n_stick(x3) & n_swimming(x1) & of(x1,x2) & n_dog(x2))
exists x1 x2 x3.(n_ocean(x3) & a_topic(x1) & in(x1,x3) & n_swimming(x1) & of(x1,x2) & n_dog(x2))