Question: Mizuto Hirota competes in Featherweight division, which refers to what weight class?
Sentence (from "Lineal championship"): Champions recognized by sanctioning bodies such as the World Boxing Association (WBA) or World Boxing Council (WBC), or the Ultimate Fighting Championship (UFC) may vacate their title voluntarily, or be stripped of the title for breaching the sanctioning body's regulations or contracts.
Relevant evidence: No