Beslan school siege
The crisis began when a group of armed Chechen separatists , occupied School Number One ( SNO ) in the town of Beslan , North Ossetia ( an autonomous republic in the North Caucasus region of the Russian Federation ) , on 1 September 2004 . 
<triplet> Beslan <subj> Russian Federation <obj> country <triplet> North Ossetia <subj> Russian Federation <obj> country <triplet> North Caucasus <subj> Russian Federation <obj> country <triplet> Russian Federation <subj> North Ossetia <obj> contains administrative territorial entity