Two women walk down a street.
A couple of ladies are walking outside.
A couple of ladies is another way to refer to two women. In order to walk down a street one must be outside.
exists e1 x1 x2.(down(e1,x2) & n_street(x2) & Actor(e1,x1) & v_walk(e1) & n_woman(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_lady(x2) & n_couple(x1))