A crowd of people standing on the sidewalk behind a barricade.
There are people outside.
if people are standing on the sidewalk, the people are outside.
exists e1 x1 x2 x3 x4 x5.(n_sidewalk(x4) & a_topic(x1) & of(x1,x2) & behind(e1,x5) & n_barricade(x5) & on(e1,x4) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_people(x2) & n_crowd(x1))
exists p1 s1 x1.(a_outside(s1) & Manner(p1,s1) & exists x2.((x1 = x2) & n_people(x2)))