Question: George Francis trained world champion Ugandan former professional boxer who competed from 1980 to 1991, and 1996 to 1999 and held the WBC super-welterweight title during what time period?

<P0-S0> John "Darkie" Smith (born 1942) is a British former boxer, now employed in boxing training and boxing matchmaking. <P0-S1>  By birth a Romany Gypsy, Darkie fought in the UK until the age of 30. <P0-S2>  He served an apprenticeship under the pro trainer George Francis before setting out on his own. <P0-S3>  Smith has worked as a trainer in the UK, France, Spain, Majorca, the USA and Germany. <P0-S4>  Fighters trained to world titles include heavyweight Herbie Hide, light heavyweight and cruiserweight Fabrice Tiozzo, super middleweight Christophe Tiozzo and light welterweight Stephen Smith. <P0-S5>  He has also trained European, Commonwealth and British champions, and worked with other future champions during the early stages of their careers. <P0-S6>  These fighters include European Heavyweight Champion Zeljko Mavrovic and future world champion Chris Eubank. <P0-S7>  Darkie's work with Mavrovic drew much attention. <P0-S8>  Mavrovic was trained exclusively by Smith for five years, winning and defending his European title and finishing with a record of one defeat in thirty bouts. <P0-S9>  The one defeat amounted to a points decision against world champion Lennox Lewis, in a bout that saw Mavrovic concede a significant weight advantage. <SEP> <P1-S0> Jorge Armando Arce Armenta ( ; born July 27, 1979), best known as Jorge Arce, is a Mexican former professional boxer who competed from 1996 to 2014. <P1-S1>  He is a five-time world champion, and the second boxer from Mexico to win world titles in four weight divisions (after Érik Morales, who first achieved the feat two months prior). <P1-S2>  In a storied career, Arce held the WBO light flyweight title from 1998 to 1999; the WBC and lineal light flyweight titles from 2002 to 2004; the WBO super flyweight title in 2010; the WBO junior featherweight title in 2011; and the WBO bantamweight title from 2011 to 2012. <P1-S3>  Additionally he held the WBC interim flyweight title from 2005 to 2006, the WBA interim super flyweight title from 2008 to 2009, and challenged once for the WBC featherweight title in his final fight in 2014. <SEP> <P2-S0>  He was found hanged at his home in London, apparently having committed suicide. <P2-S1> George Francis ("c." 1929–2002) was a British boxing athletic trainer who trained world champion boxers such as Frank Bruno, John Conteh, John Mugabi, and Cornelius Boza Edwards. <P2-S2>  He was 73. <SEP> <P3-S0> John Mugabi (born 4 March 1960) is a Ugandan former professional boxer who competed from 1980 to 1991, and 1996 to 1999. <P3-S1>  He held the WBC super-welterweight title from 1989 to 1990, and challenged twice for world titles at middleweight, including the undisputed championship. <P3-S2>  Mugabi was part of an exceptionally talented group of light-middleweights and middleweights during a "golden era" of the 1980s which included Marvin Hagler, Sugar Ray Leonard, Thomas Hearns, Wilfred Benítez, Davey Moore, and Roberto Durán. <P3-S3>  As an amateur, Mugabi won a silver medal in the welterweight division at the 1980 Summer Olympics, and was the only medallist for Uganda at the event.