With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mickey Mantle was an American football player.
text_B: Lev Vladimirovich Kuleshov -LRB- Лев Владимирович Кулешов -- 29 March 1970 -RRB- was a Russian and Soviet filmmaker and film theorist , one of the founders of the world 's first film school , the Moscow Film School .. Moscow. Moscow. Russian. Russian Empire. Soviet. Soviet Union. film. film. film theorist. Film theory. Moscow Film School. Moscow Film School. People 's Artist of the RSFSR -LRB- 1969 -RRB- .
not_related.