With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: In 2012, Katy Perry released an autobiographical documentary.
text_B: The Dauvray Cup was a championship trophy awarded in professional baseball from 1887 to 1893 .. championship. championship. trophy. trophy. professional baseball. professional baseball. Named after Helen Dauvray , who presented the cup , it was initially awarded to the winner of the World Series between the National League and American Association .. Helen Dauvray. Helen Dauvray. World Series. World Series#The original World Series. National League. National League. American Association. American Association ( 19th century ). It was the first World Series trophy .. trophy. trophy. World Series. World Series#The original World Series. The last National League-American Association series was in 1890 , with the latter collapsing after the end of the following season .. National League. National League. American Association. American Association ( 19th century ). The cup was then awarded to the winner of the National League pennant .. National League. National League. National League pennant. List of National League pennant winners. Like the Stanley Cup , the same trophy was used each season rather than a new one being made .. trophy. trophy. Stanley Cup. Stanley Cup. The Dauvray Cup has since been lost .
not_related.