Many people walk around at night.
people commuting at night
People walking around at night are not necessarily commuting.
exists e1 s1 x1 x2.(at(e1,x2) & n_night(x2) & a_around(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & n_people(x1) & n_quantity(x1))
exists e1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_night(x3) & Actor(e1,x2) & v_commute(e1) & (x1 = x2) & n_people(x1))