The three dogs are playing with each other.
the dogs are playing with a ball
No ball is seen.
exists e1 x1.(n_dog(x1) & card_eq_3(x1) & all x2.(n_other(x2) -> with(e1,x2)) & Actor(e1,x1) & v_play(e1))
exists e1 x1 x2.(n_dog(x1) & with(e1,x2) & n_ball(x2) & Actor(e1,x1) & v_play(e1))