Policemen are gathered around a glass building.
Policemen are gathered at a crime scene outside.
Just because policemen are gathered around a building does not mean they are at a crime scene.
exists e1 x1 x2 x3.(around(e1,x2) & n_building(x2) & of(x2,x3) & n_glass(x3) & Theme(e1,x1) & v_gather(e1) & n_policeman(x1))
exists e1 s1 x1 x2 x3.(a_outside(s1) & Manner(e1,s1) & at(e1,x2) & n_scene(x2) & of(x2,x3) & n_crime(x3) & Theme(e1,x1) & v_gather(e1) & n_policeman(x1))