With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Melisandre is in the fantasy novels of George R. R. Martin.
text_B: Yana Borodina -LRB- born 21 April 1992 -RRB- is a Russian athlete who competes in the Triple Jump with a personal best result of 14.41 metres .. Triple Jump. Triple Jump. athlete. Athletics ( sport ). Borodina won the bronze medal at the 2012 European Athletics Championships in Helsinki .. Athletics. Athletics ( sport ). 2012 European Athletics Championships. 2012 European Athletics Championships
not_related.