Two black and white dogs after something in the mud.
A couple of dogs are looking for a ball
Dogs after something in the mud needn't be looking for a ball.
exists s1 s2 x1 x2 x3.(n_mud(x3) & a_topic(x1) & after(x1,x2) & in(x2,x3) & n_thing(x2) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(for(e1,x3) & n_ball(x3) & Actor(e1,x1) & v_look(e1) & of(x1,x2) & n_dog(x2) & n_couple(x1))