Question: Which Celebrity Apprentice Australia April 2013 cast member was best known for his trilogy with Ghanaian boxing legend Azumah Nelson?
Sentence (from "The Apprentice (U.S. season 13)"): Also appearing as guest judges are past winners Joan Rivers, Piers Morgan, Arsenio Hall and John Rich, along with past judge George Ross, as well as Ivanka Trump, Eric Trump, and Donald Trump Jr.
Relevant evidence: No