A black dog and a brown dog with a ball.
There are dogs playing with balls
Just because two dogs are with ball doesn't mean that they are playing.
exists s1 s2 s3 x1 x2 x3.(a_topic(s1) & subset_of(x2,s1) & with(x2,x3) & n_ball(x3) & n_dog(x2) & a_brown(s3) & Theme(s3,x2) & subset_of(x1,s1) & n_dog(x1) & a_black(s2) & Theme(s2,x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & with(e1,x4) & n_ball(x4) & Actor(e1,x3) & v_play(e1) & (x2 = x3) & n_dog(x2))