Mayerlin Rivas
... that Mayerlin Rivas held World Boxing Association world championship titles in both bantamweight and super bantamweight classes?
... that <b id="mwAls"><a href="./Mayerlin_Rivas" id="mwAlw" rel="mw:WikiLink" title="Mayerlin Rivas">Mayerlin Rivas</a></b> held <a href="./World_Boxing_Association" id="mwAl0" rel="mw:WikiLink" title="World Boxing Association">World Boxing Association</a> world championship titles in both <a href="./Bantamweight" id="mwAl4" rel="mw:WikiLink" title="Bantamweight">bantamweight</a> and <a href="./Super_bantamweight" id="mwAl8" rel="mw:WikiLink" title="Super bantamweight">super bantamweight</a> classes?