Two dogs and a puppy.
Three cats
2 dogs & a puppy vs 3 cats
exists s1 x1 x2.(a_topic(s1) & subset_of(x2,s1) & n_puppy(x2) & subset_of(x1,s1) & n_dog(x1) & card_eq_2(x1))
exists x1.(n_cat(x1) & card_eq_3(x1) & a_topic(x1))