With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Dark Places stars two actors born in 1975.
text_B: Brad Martin is a musician .. Brad Martin. Brad Martin. Brad Martin may also refer to  :. Brad Martin. Brad Martin. Brad Martin , character in 7500 -LRB- film -RRB-. Brad Martin. Brad Martin. Brad Martin -LRB- snowboarder -RRB-. Brad Martin. Brad Martin
not_related.