With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Adrien Broner was born in 1989.
text_B: Adrien Jerome Broner -LRB- born July 28 , 1989 -RRB- is an American professional boxer .. professional boxer. professional boxer. He is a former four-weight world champion , having held the WBO junior lightweight title from 2011 to 2012 ; the WBC lightweight title from 2012 to 2013 ; the WBA welterweight title in 2014 ; and the WBA super lightweight title from 2015 to 2016 .. four-weight world champion. quadruple champion. WBO. World Boxing Organization. junior lightweight. junior lightweight. WBC. World Boxing Council. lightweight. lightweight. WBA. World Boxing Association. welterweight. welterweight. super lightweight. super lightweight. The Ring magazine previously ranked Broner as the fifth best boxer in the world , pound for pound , in December 2012 .. pound for pound. The Ring magazine Pound for Pound
related.