A black dog swims through the water.
A dog swims.
Black dog is a type of dog.
exists s1 x1 x2 x3.(n_water(x3) & a_topic(x1) & through(x1,x3) & n_swim(x1) & of(x1,x2) & n_dog(x2) & a_black(s1) & Theme(s1,x1))
exists x1 x2.(a_topic(x1) & n_swim(x1) & of(x1,x2) & n_dog(x2))