Two men on the beach with two black and white dogs.
Friends are with their pets on the beach.
Two men are not necessarily friends.
exists s1 s2 x1 x2 x3.(n_beach(x2) & a_topic(x1) & with(x1,x3) & n_dog(x3) & a_white(s2) & Theme(s2,x3) & a_black(s1) & Theme(s1,x3) & card_eq_2(x3) & on(x1,x2) & n_man(x1) & card_eq_2(x1))
exists p1 x1 x2 x3.(n_beach(x3) & with(x1,x2) & on(x2,x3) & n_pet(x2) & of(x2,x1) & n_thing(x1) & n_friend(x1))