With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Warren Buffett is a philanthropist.
text_B: is a Japanese female mixed martial arts -LRB- MMA -RRB- fighter .. Japanese. Japanese people. mixed martial arts. mixed martial arts. Her nicknames are and .. Mogi has participated in MMA promotions Smackgirl , Shooto and Valkyrie .. Smackgirl. Smackgirl. Shooto. Shooto. Valkyrie. Valkyrie ( mixed martial arts ). She formerly worked as Valkyrie 's producer -LRB- matchmaker -RRB- and is now a producer for Jewels .. Valkyrie. Valkyrie ( mixed martial arts ). Jewels. Jewels ( mixed martial arts )
not_related.