Two brown dogs run through the grass.
Two white dogs are playing in the dirt.
The white dogs contradicts the brown dogs.
exists e1 s1 x1 x2.(n_grass(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_brown(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(n_dirt(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & a_white(s1) & Theme(s1,x1) & card_eq_2(x1))