Question: This boxer trained by Naazim Richardson won a gold medal in what event in 2007?
Sentence (from "Naazim Richardson"): Richardson is most notable for training Bernard Hopkins and "Sugar" Shane Mosley, in addition to Steve Cunningham and Karl Dargan; furthermore, he is known for catching Antonio Margarito with plaster knuckle pads in his hand-wraps, prior to Margarito's fight with Mosley, leading to Margarito's eventual 1 year suspension from the sport of boxing.
Relevant evidence: Yes