premise: L.A. Reid hasn't served as the chairman of Epic Records.
hypothesis: L.A. Reid . He has served as the chairman and CEO of Epic Records , a division of Sony Music Entertainment , the president and CEO of Arista Records , and the chairman and CEO of the Island Def Jam Music Group . He appeared as a judge on the first two seasons of the U.S. version of the television show The X Factor , but in December 2012 announced he would not be back for the show 's third season , saying he wanted to focus on his leadership at Epic Records .