With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: License to Drive stars an American actress born in 1952.
text_B: Ravindra Shripad Kulkarni -LRB- born 1942 -RRB- is an Indian mathematician , specializing in differential geometry .. He is known for the Kulkarni -- Nomizu product .
not_related.