With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bill Nye worked in Boston.
text_B: Ivo Perovic -LRB- 1882 − 1958 -RRB- was Regent of Yugoslavia for the underage Peter II from 1934 to 1941 .. Yugoslavia. Kingdom of Yugoslavia. Peter II. Peter II of Yugoslavia. Category  :1882 births. Category  :1958 deaths. Category  : Regents
not_related.