Question: What country was the winner of the 1979 South African Grand Prix from?

Context articles: Mike Harris (racing driver)
Gilles Villeneuve
1975 South African Grand Prix
1979 South African Grand Prix
1961 South African Grand Prix
Kyalami
1976 South African Grand Prix
Durban street circuit
1980 South African Grand Prix
1992 South African Grand Prix

Mike Harris (born 25 May 1939 in Mufulira, Northern Rhodesia) is a South African former racing driver.
 His single World Championship Formula One grand prix was the 1962 South African Grand Prix, where he retired his Cooper-Alfa Romeo with engine failure before half-distance.
Joseph Gilles Henri Villeneuve (] ; January 18, 1950 – May 8, 1982), known as Gilles Villeneuve, was a Canadian racing driver.
 Villeneuve spent six years in Grand Prix racing with Ferrari, winning six races and widespread acclaim for his performances.
The 1975 South African Grand Prix was a Formula One motor race held at Kyalami on 1 March 1975.
 It was race 3 of 14 in both the 1975 World Championship of Drivers and the 1975 International Cup for Formula One Manufacturers.
 It was the 21st South African Grand Prix since the first Grand Prix was held in 1934 and the ninth to be held at Kyalami just outside Johannesburg.
 It was held over 78 laps of the four kilometre circuit for a race distance of 320 kilometres.
The 1979 South African Grand Prix was a Formula One motor race held on 3 March 1979 at Kyalami.
 The race, contested over 78 laps, was the third race of the 1979 Formula One season and was won by Gilles Villeneuve, driving a Ferrari.
 Team-mate and local driver Jody Scheckter finished second, while Jean-Pierre Jarier finished third in a Tyrrell-Ford.
The 1961 South African Grand Prix, formally titled the 8th International RAC South African Grand Prix, was a non-championship Formula One motor race held at Prince George Circuit, East London, South Africa on 26 December 1961.
 The race, run over 80 laps of the circuit, was won from pole position by Scotland's Jim Clark, driving a works Lotus-Climax.
 Englishman Stirling Moss finished second in a private Lotus-Climax, while Swede Jo Bonnier was third in a Porsche.
Kyalami Racing Circuit (from "Khaya lami", "My home" in Zulu) is a motor racing circuit located in Midrand, Gauteng province, South Africa.
 The circuit has been used for Grand Prix and Formula One races and has hosted the South African Grand Prix many times.
 Among the Formula One races held at the track the 1977 South African Grand Prix stands out, as it is principally remembered for the fatal accident that claimed the lives of race marshal Frederick Jansen van Vuuren and driver Tom Pryce.
 In recent years, the area surrounding the circuit has developed into a residential and commercial suburb of Johannesburg.
 More recently, Kyalami has played host to five rounds of the Superbike World Championship from 1998 to 2002 and later in 2009 and 2010, the season finale of the Superstars Series in 2009 and 2010, and the South African round of the 2008–09 A1 Grand Prix season.
The 1976 South African Grand Prix (formally the XXII South African Grand Prix) was a Formula One motor race held on 6 March 1976 at Kyalami in Transvaal Province, South Africa.
 It was the second round of the 1976 Formula One season.
 The race was the 22nd South African Grand Prix and the tenth to be held at Kyalami.
 The race was held over 78 laps of the 4.104-kilometre circuit for a total race distance of 320 kilometres.
The Durban street circuit was a 3.283 km temporary street circuit located in Durban, South Africa which was 300 metres from Durban's North Beach and 800 metres from Durban's CBD.
 The circuit and infrastructure was designed by D3 Motorsport Development which also oversaw the construction of the circuit each year.
 It was used for the A1 Grand Prix from 2005 to 2008.
 The A1 Grand Prix race held on this circuit was the first international open-wheel automobile race held in the country since the 1993 South African Grand Prix.
The 1980 South African Grand Prix was a Formula One motor race held on 1 March 1980 at Kyalami in Gauteng, South Africa.
 It was the third round of the 1980 Formula One season.
 The race was the twenty-sixth South African Grand Prix and the fourteenth to be held at Kyalami.
 The race was held over 78 laps of the 4.104-kilometre circuit for a total race distance of 320 kilometres.
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.