Two brown dogs are running through the green grass.
Two dogs are white
Brown and white are two different colors.
exists e1 s1 s2 x1 x2.(n_grass(x2) & a_green(s2) & Theme(s2,x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_brown(s1) & Theme(s1,x1) & card_eq_2(x1))
exists s1 x1.(Theme(s1,x1) & a_white(s1) & n_dog(x1) & card_eq_2(x1))