Question: During this Grammy Awards event, where Kanye West, Adele, and Bruno Mars had several nominations and West's album had a prestigious award, which American rapper, actor, author and entrepreneur from Queens, New York was the host?
Sentence (from "54th Annual Grammy Awards"): Nominations were announced on November 30, 2011 on prime-time television as part of "The GRAMMY Nominations Concert Live!
Relevant evidence: No