Passersby in an outdoor mall.
People walking through a mall.
The passersby are the people walking  through an outdoor mall.
exists s1 s2 x1.(ne_nam_passersby(s1) & a_topic(s1) & in(s1,x1) & n_mall(x1) & a_outdoor(s2) & Theme(s2,x1))
exists e1 x1 x2 x3.(a_topic(x1) & through(e1,x3) & n_mall(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1))