Two black dogs run through a field.
Two white dogs are running.
Black is not the same as white.
exists e1 s1 x1 x2.(through(e1,x2) & n_field(x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_black(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 s1 x1.(Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_white(s1) & Theme(s1,x1) & card_eq_2(x1))