Women in costumes on a street.
Men in costumes on a street.
The subjects are either men or women, not both.
exists x1 x2 x3.(a_topic(x1) & in(x1,x2) & on(x2,x3) & n_street(x3) & n_costume(x2) & n_woman(x1))
exists x1 x2 x3.(a_topic(x1) & in(x1,x2) & on(x2,x3) & n_street(x3) & n_costume(x2) & n_man(x1))