Policemen are gathered around a glass building.
Policemen running down a track.
One cannot be gathered around a glass building and running down a track simultaneously.
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.(ne_nam_policemen(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_track(x2))