Three dogs on a sidewalk.
The dogs are big.
A dog can be on a sidewalk and not be big.
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_sidewalk(x2) & n_dog(x1) & card_eq_3(x1))
exists s1 x1.(n_dog(x1) & Theme(s1,x1) & a_big(s1))