Two dogs play in the grass.
Two dogs playing in the fields.
Fields have grass.
exists x1 x2 x3.(n_grass(x3) & a_topic(x1) & in(x1,x3) & n_play(x1) & of(x1,x2) & n_dog(x2) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_field(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))