Three dogs play in the grass.
the dogs play in the grass
dogs play in the grass is same as  dogs play in the grass
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_3(x1))
exists x1 x2 x3.(n_grass(x3) & n_play(x1) & of(x1,x2) & n_dog(x2) & a_topic(x1) & in(x1,x3))