A black dog in the backyard.
A dark pup outside.
A black dog and a dark pup could be the same thing.  A backyard is usually outside.
exists s1 x1 x2.(n_backyard(x2) & a_topic(x1) & in(x1,x2) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists s1 x1 x2.(a_topic(x1) & n_outside(x1) & of(x1,x2) & n_pup(x2) & a_dark(s1) & Theme(s1,x1))