A black and white dog frolics in the snow.
The cat sat in the window.
cat and dog are different animals
exists s1 s2 x1 x2 x3.(n_snow(x3) & a_topic(x1) & in(x1,x3) & n_frolic(x1) & of(x1,x2) & n_dog(x2) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_window(x2) & n_cat(x1) & in(e1,x2) & Actor(e1,x1) & v_sit(e1))