Question: Rodney Jerkins (born July 29, 1977), also known by his stage name Darkchild, is an American record producer, songwriter and rapper, he has collaborated with a broad range of popular artists, including Justin Drew Bieber, a Canadian singer and songwriter, after a talent manager discovered him through his YouTube videos covering songs in which year, and signed to RBMG?
Sentence (from "Justin Bieber"): It was certified Platinum in the U.S.
Relevant evidence: No