William Fernando Souza Bezerra (born 20 September 1984) is a Brazilian cruiserweight professional boxer. Bazerra is the current South American cruiserweight champion and a former Brazilian, WBC Mundo Hispano, WBA Fedelatin and WBA Fedebol cruiserweight champion. Using only the above description and what you know about the world, "William's parents were proud when he won the South American cruiserweight championship." is definitely correct, incorrect, or inconclusive? 