With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: North Korea is bordered by the Tumen River and it is a dictatorship.
text_B: Kai-David Bosing -LRB- born 7 March 1994 -RRB- is a German footballer who plays as midfielder for Fortuna Koln .. Fortuna Koln. SC Fortuna Koln. footballer. Association football. midfielder. midfielder
not_related.