People on the roof of a building look down on a crowded street.
People are inside of the building.
You cannot be inside a building if you are on the roof because the roof is always on the outside.
exists s1 x1 x2 x3 x4 x5.(n_roof(x2) & a_topic(x1) & on(x1,x2) & of(x2,x3) & on(x3,x5) & n_street(x5) & a_crowded(s1) & Theme(s1,x5) & r_down(x3) & n_look(x3) & of(x3,x4) & n_building(x4) & n_people(x1))
exists p1 x1 x3.(n_building(x3) & exists x2.((x1 = x2) & of(x2,x3) & n_inside(x2)) & n_people(x1))