With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Boston University has colleges.
text_B: Bratovo may refer to  :. In Bulgaria -LRB- written in Cyrillic as Братово -RRB-  :. Bratovo , Burgas Province - a town in Burgas municipality , Burgas Province. Bratovo , Targovishte Province - a village in Targovishte municipality , Targovishte Province
not_related.