Woman in long skirt walking across street.
Prostitute walks across a street to a potential customer.
Not all women are a prostitute. Woman walking across street is not necessarily to a potential customer.
exists s1 s2 x1 x2 x3.(ne_nam_woman(s1) & a_topic(s1) & in(s1,x1) & across(x1,x3) & n_street(x3) & n_walking(x1) & of(x1,x2) & n_skirt(x2) & a_long(s2) & Theme(s2,x1))
exists e1 s1 x1 x2 x3.(ne_nam_prostitute(x1) & across(e1,x3) & n_street(x3) & to(e1,x2) & n_customer(x2) & a_potential(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1))