1950 Italian Grand Prix

Columns: Pos | No | Driver | Constructor | Time | Gap
8 | 12 | Raymond Sommer | Talbot-Lago - Talbot | 2:08.6 | + 10.0 | 9 | 4 | Franco Rol | Maserati | 2:10.0 | + 11.4 | 10 | 44 | Robert Manzon | Simca - Gordini | 2:12.4 | + 13.8 | 11 | 40 | Guy Mairesse | Talbot-Lago - Talbot | 2:13.2 | + 14.6 | 12 | 42 | Maurice Trintignant | Simca - Gordini | 2:13.4 | + 14.8 | 13 | 58 | Louis Rosier | Talbot-Lago - Talbot | 2:13.4 | + 14.8 | 14 | 64 | Henri Louveau | Talbot-Lago - Talbot | 2:13.8 | + 15.2

Example questions:
The driver that came in 2nd place in the qualifying of the 1950 Italian Grand Prix had won world titles in which two years ? | What year was the driver with a time gap of +14.6 in the qualifying of the 1950 Italian Grand Prix born in ? | What year did the driver in the qualifying of the 1950 Italian Grand Prix who represented the number 24 pass away in ? | What is the total winning percentage for the driver who came in first place in the qualifying of the 1950 Italian Grand Prix ?

Answers:
1952 and 1953 | 1910 | 1981 | 46.15%