Question: Which American rock band, formed in Tennessee in 1999, recieved a nomination in 2013 for best rock album at the 56th Gramy Awards?
Sentence (from "Mechanical Bull (album)"): Mechanical Bull is the sixth studio album by American rock band Kings of Leon, released in Ireland, Germany, Sweden and Australia on September 20, 2013, in the United Kingdom on September 23, 2013, and in North America on September 24, 2013 by RCA Records.
Relevant evidence: No