What country was the winner of the 1979 South African Grand Prix from?
1979 South African Grand Prix:  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. Gilles Villeneuve: Joseph Gilles Henri Villeneuve (] ; January 18, 1950 – May 8, 1982), known as Gilles Villeneuve, was a Canadian racing driver.
was a Canadian