Question: what year did the winner of the 1992 South African Grand Prix with the CART Indy Car World Series?

Context paragraphs:
1996 PPG Indy Car World Series: The 1996 PPG Indy Car World Series season, the eighteenth in the CART era of U.S. open-wheel racing, consisted of 16 races, beginning in Homestead, Florida on March 3 and concluding in Monterey, California on September 8, in which it was marred by the death of Jeff Krosnoff.  The PPG Indy Car World Series Drivers' Champion was Jimmy Vasser.  Rookie of the Year was Alex Zanardi.  This was the first season after the split with the Indy Racing League and the last year that CART licensed the "IndyCar" trademark from the Indianapolis Motor Speedway.  The Indianapolis 500 was replaced in the Series by the U.S. 500, held in Brooklyn, Michigan.

1979 SCCA/CART Indy Car Series: The 1979 SCCA/CART Indy Car Series was the inaugural season for the CART Indy car series.  It was the first national championship season of American open wheel racing sanctioned by CART.  The season consisted of 14 races.  Rick Mears was the national champion, and the rookie of the year was Bill Alsup.  The 1979 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship.  Rick Mears won the Indy 500, his first of four victories in the event.

1982 CART PPG Indy Car World Series: The 1982 CART PPG Indy Car World Series season, the fourth in the CART era of U.S. open-wheel racing, consisted of 11 races, beginning in Avondale, Arizona on March 28 and concluding at the same location on November 6.  The PPG Indy Car World Series Drivers' Champion was Rick Mears.  Rookie of the Year was Bobby Rahal.

1981 CART PPG Indy Car World Series: The 1981 CART PPG Indy Car World Series season, the third in the CART era of U.S. open-wheel racing, consisted of 11 races, beginning in Avondale, Arizona on March 22 and concluding at the same location on October 31.  The PPG Indy Car World Series Drivers' Champion was Rick Mears.  Rookie of the Year was Bob Lazier.  After the disagreement with the USAC during the previous season, the 65th Indianapolis 500 was not part of the Series, however no competing race was scheduled and most CART teams and drivers did take part.

Monterey Grand Prix: The Monterey Grand Prix was an auto race held at Mazda Raceway Laguna Seca.  The race was first held as a USAC Road Racing Championship event, following the success of the SCCA's Pebble Beach Road Races.  After USAC's road racing series disbanded in 1962, the race became a non-championship race for three years, before joining the Can-Am schedule.  After Can-Am's demise in 1974, the event shifted to Formula 5000 for two years, then to the IMSA GT Championship for two more years, then to the revamped, Formula 5000-based Can-Am.  The first Indy Car / CART / Champ Car World Series race was held in 1983, and the final race was held in 2004.  The race was to be brought back to Champ Car in 2008, but after the series was absorbed by the Indy Racing League, the Atlantic Championship took over the headline event.  For 2015, the race returned as part of Mazda Road to Indy Championship Weekend.  All three lower tiers of INDYCAR's Road to Indy participate, as a standalone race.

Nigel Mansell: Nigel Ernest James Mansell, {'1': ", '2': ", '3': ", '4': "} ( ; born 8 August 1953) is a British former racing driver who won both the Formula One World Championship (1992) and the CART Indy Car World Series (1993).  Mansell was the reigning F1 champion when he moved over to CART, becoming the first person to win the CART title in his debut season, and making him the only person to hold both the World Drivers' Championship and the American open-wheel National Championship simultaneously.

1984 CART PPG Indy Car World Series: The 1984 CART PPG Indy Car World Series season, the sixth in the CART era of U.S. open-wheel racing, consisted of 16 races, beginning in Long Beach, California on March 31 and concluding in Las Vegas, Nevada on November 10.  The PPG Indy Car World Series Drivers' Champion was Mario Andretti and the Indianapolis 500 winner was Rick Mears.  Rookie of the Year was Roberto Guerrero.  The 68th Indianapolis 500 was sanctioned by the USAC, but counted in the CART points standings.

1995 PPG Indy Car World Series: The 1995 PPG Indy Car World Series season, the seventeenth in the CART era of U.S. open-wheel racing, consisted of 17 races, beginning in Miami, Florida on March 5 and concluding in Monterey, California on September 10.  The PPG Indy Car World Series Drivers' Champion and Indianapolis 500 winner was Jacques Villeneuve.  Rookie of the Year was Gil de Ferran.  This was the last season before the formation of the Indy Racing League by Indianapolis Motor Speedway owner, Tony George, and the last time the USAC-sanctioned Indianapolis 500 would appear in the Series.

1980 CART PPG Indy Car World Series: The 1980 CART PPG Indy Car World Series season was the second in the CART era of U.S. open-wheel racing.  It consisted of twelve races, beginning in Ontario, California on April 13 and concluding in Avondale, Arizona on November 8.  The PPG Indy Car World Series Drivers' Champion and Indianapolis 500 winner was Johnny Rutherford.  Rookie of the Year was Dennis Firestone.  The entire season, including the 64th Indianapolis 500, was to be co-sanctioned by both the USAC and CART under the banner of the Championship Racing League (CRL).  However, USAC withdrew from the arrangement after five races.

1992 South African Grand Prix: The 1992 South African Grand Prix was a Formula One motor race held at the Kyalami circuit in Midrand, South Africa on 1 March 1992.  It was the opening round of the 1992 Formula One season and was contested over 72 laps.  It was the 32nd South African Grand Prix, and the 22nd as part of the World Championship.  Nigel Mansell dominated the weekend in his Williams-Renault, taking pole position, fastest lap and leading every lap of the race en route to victory for the second time in his career.  Mansell's team-mate, Riccardo Patrese, asserted the dominance of the car by completing a 1-2 finish.  Ayrton Senna completed the podium for the McLaren team.

Supporting paragraphs: 1992 South African Grand Prix Nigel Mansell
Answer: 1993