Question: Joan Guzmán was a Dominican former professional boxer, and two-weight world champion, from which sanctioning boxing organization?
Sentence (from "Joe Calzaghe"): Joseph William Calzaghe, {'1': ", '2': ", '3': ", '4': "} ( ; born 23 March 1972) is a Welsh former professional boxer who competed from 1993 to 2008.
Relevant evidence: No