With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jason Bateman is a large blue whale.
text_B: The 2009 Tri Nations Series was the fourteenth annual Tri Nations rugby union series between the national rugby union teams of New Zealand , Australia and South Africa , respectively nicknamed the All Blacks , Wallabies , and Springboks .. Tri Nations. Tri Nations Series. rugby union. rugby union. New Zealand. New Zealand national rugby union team. Australia. Australia national rugby union team. South Africa. South Africa national rugby union team. The Springboks secured the season crown in their final match on 12 September , defeating the defending series champion All Blacks 32 -- 29 in Hamilton .. Hamilton. 2009 Tri Nations Series#Week 8
not_related.