With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Malcolm Young was a songwriter for Rihanna.
text_B: Malcolm Mitchell Young -LRB- born 6 January 1953 -RRB- is an Australian retired musician and songwriter , best known as a co-founder , rhythm guitarist , backing vocalist and songwriter for the hard rock band AC / DC .. AC / DC. AC / DC. backing vocalist. backing vocalist. songwriter. songwriter. hard rock. hard rock. Except for a brief absence in 1988 , he was with the band from its November 1973 beginning until retiring permanently in 2014 , due to health reasons .. Young and the other members of AC / DC were inducted into the Rock and Roll Hall of Fame in 2003 .. AC / DC. AC / DC. Rock and Roll Hall of Fame. Rock and Roll Hall of Fame. Though his younger brother Angus is the more visible of the brothers , Malcolm has been described as the driving force and the leader of the band .. Angus. Angus Young. He also added that despite his retirement from the band , AC / DC was determined to continue making music with his blessing .. AC / DC. AC / DC. As the rhythm guitarist , he was responsible for the broad sweep of the band 's sound , developing many of their guitar riffs and co-writing the band 's material with Angus .. Angus. Angus Young. He is married to Linda Young and has two children , Cara and Ross .. Young took a leave of absence from AC / DC in April 2014 , to receive treatment for dementia .. AC / DC. AC / DC. dementia. dementia. In September 2014 , the band 's management announced that he would be retiring permanently .
related.