Two dogs chasing a ball.
The dogs are chasing an orange ball.
You can not infer it is orange.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_chase(e1) & n_ball(x3) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_ball(x2) & of(x2,x3) & n_orange(x3))