Question: What great  boxer formerly known as Cassius Clay along with American former professional boxer and commentator trained at Gleason's Gym?
Sentence (from "Paulie Malignaggi"): He is a two-weight world champion, having held the IBF junior welterweight title from 2007 to 2008, and the WBA welterweight title from 2012 to 2013.
Relevant evidence: No