With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Popstar: Never Stop Never Stopping stars an actor.
text_B: Guizar is a surname .. Notable people with the surname include  :. Rafael Guizar y Valencia -LRB- 1878 -- 1938 -RRB- , Mexican saint. Rafael Guizar y Valencia. Rafael Guizar y Valencia. Tito Guizar -LRB- 1908 -- 1999 -RRB- , Mexican singer and actor. Tito Guizar. Tito Guizar
not_related.