People walking on a street.
They are walking home
It is not necessary to go home whenever walking
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_street(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(n_thing(x1) & Time(e1,x2) & n_home(x2) & Actor(e1,x1) & v_walk(e1))