People crossing a busy street.
People are crossing the street to get to work.
People could be crossing a street without needing to get to work.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_cross(e1) & n_street(x3) & a_busy(s1) & Theme(s1,x3) & (x1 = x2) & n_people(x1))
exists e1 p1 x1 x2 x3.(n_street(x3) & Topic(e1,p1) & exists e2 p2.(Topic(e2,p2) & Actor(e2,x1) & v_get(e2) & exists e3.(Actor(e3,x1) & v_work(e3))) & Theme(e1,x3) & Actor(e1,x2) & v_cross(e1) & n_people(x2) & n_people(x1))