Two dogs are playing and wrestling with each other.
A pair of dogs is playing.
A pair is two.   The pair of dogs is two dogs.   Wrestling is playing.
exists e1 e2 x1 x2.(all x3.(n_other(x3) -> with(e2,x3)) & Actor(e2,x2) & v_wrestle(e2) & n_dog(x2) & card_eq_2(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_play(e1) & of(x1,x2) & n_dog(x2) & n_pair(x1))