Question: What American professional boxer, boxing commentator, boxing trainer, rapper, and actor, was involved in fights refereed by Ron Lipton?
Sentence (from "Ron Lipton"): Lipton refereed fights involving Evander Holyfield, Ray Mercer, Roy Jones Jr., Oscar De La Hoya, David Tua, Junior Jones, Chris Eubank, Donovan Ruddock, Pernell Whitaker and Roberto Duran.
Relevant evidence: Yes