With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Steve McQueen is a race car driver.
text_B: Lleyton Hewitt was the defending champion and won in the final 6 -- 4 , 6 -- 1 against Magnus Norman .. Lleyton Hewitt. Lleyton Hewitt. Magnus Norman. Magnus Norman
not_related.