people walking past three street barrier
People standing behind barriers.
The people cannot be walking past a barrier while they are standing behind it.
exists e1 x1 x2 x3 x4.(a_topic(x1) & past(e1,x3) & n_barrier(x3) & of(x3,x4) & n_street(x4) & card_eq_3(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2 x3.(a_topic(x1) & behind(e1,x3) & n_barrier(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1))