A woman smiling at a man on the street.
A woman frowns at a man on the street.
A woman can be either smiling or frowning.
exists e1 x1 x2 x3 x4.(n_street(x4) & a_topic(x1) & at(e1,x3) & on(x3,x4) & n_man(x3) & Actor(e1,x2) & v_smile(e1) & (x1 = x2) & n_woman(x1))
exists x1 x2 x3 x4.(n_street(x4) & a_topic(x1) & at(x1,x3) & on(x3,x4) & n_man(x3) & n_frown(x1) & of(x1,x2) & n_woman(x2))