A couple of women walk down the street doing window shopping.
Two women look in shop windows.
A couple of women means two women. If they are window shopping they are looking in the windows and not going into the stores.
exists e2 e1 x1 x2 x3 x4 x5 x6.(n_street(x3) & down(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_do(e2) & n_shopping(x5) & of(x5,x6) & n_window(x6) & (x3 = x4) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_woman(x2) & n_couple(x1))
exists e1 x1 x2 x3.(in(e1,x2) & n_window(x2) & of(x2,x3) & n_shop(x3) & Actor(e1,x1) & v_look(e1) & n_woman(x1) & card_eq_2(x1))