With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A film starring Oliver Reed and Vanessa Redgrave was directed by Ken Russell.
text_B: Olga Smirnova -LRB- born 1991 -RRB- is a Russian ballet dancer who is currently a prima ballerina with the Bolshoi Ballet .. Bolshoi Ballet. Bolshoi Ballet. She has danced at venues across Europe as well as appearing in Beijing and Japan .
not_related.