A brown dog laying on its back.
A dog is laying on its back.
sentence 1 is more detailed about the dog than sentence 2
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_back(x3) & of(x3,x1) & n_thing(x1) & Actor(e1,x2) & v_lay(e1) & (x1 = x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 x1 x2.(on(e1,x2) & n_back(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_lay(e1) & n_dog(x1))