Question: Boxing in the 1980s was filled with important fights, events and personalities that shaped the sport, WBO and which one of how many major organizations recognized by the International Boxing Hall of Fame (IBHOF) which sanction world championship boxing bouts, began operating?
Sentence (from "International Boxing Federation"): The International Boxing Federation (IBF) is one of four major organizations recognized by the International Boxing Hall of Fame (IBHOF) which sanction world championship boxing bouts, alongside the World Boxing Association (WBA), World Boxing Council (WBC) and World Boxing Organization (WBO).
Relevant evidence: Yes