Two houses and fire
Some houses with a fire.
Two houses can be considered some.
exists s1 x1 x2.(n_fire(x2) & n_house(x1) & card_eq_2(x1) & subset_of(x2,s1) & subset_of(x1,s1) & a_topic(s1))
exists x1 x2.(a_topic(x1) & with(x1,x2) & n_fire(x2) & n_house(x1))