[tag=IN] [lemma=the] [lemma=police] [lemma=","] □
[tag=IN] [lemma=the] [lemma=police] [lemma=","] [□]
[tag=IN] [lemma=the] [lemma=police] [lemma=","] □*
The building was cordoned off by the police , fire squads , and elite anti-terrorist troops .