A small brown and black dog
a dog
A "brown and black dog" indicates that there is a dog.
exists s1 s2 s3 x1 x2.(a_topic(s1) & subset_of(x2,s1) & n_dog(x2) & a_black(s3) & Theme(s3,x2) & subset_of(x1,s1) & n_brown(x1) & a_small(s2) & Theme(s2,x1))
exists x1.(a_topic(x1) & n_dog(x1))