With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Paul McCartney divorced a few times.
text_B: Sergey Kravtsov may refer to  :. Sergey Kravtsov -LRB- sailor -RRB- -LRB- born 1960 -RRB- , Belarusian Olympic sailor. Sergey Kravtsov -LRB- cyclist -RRB- -LRB- born 1948 -RRB- , Soviet Olympic cyclist
not_related.