Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Driver | Constructor | Laps | Time/Retired | Grid |
| --- | --- | --- | --- | --- |
| Alberto Ascari | Ferrari | 97 | 3:01:04.6 | 1 |
| Luigi Villoresi | Ferrari | 96 | +1 lap | 3 |
| José Froilán González | Maserati | 96 | +1 lap | 5 |
| Mike Hawthorn | Ferrari | 96 | +1 lap | 6 |
| Oscar Alfredo Gálvez | Maserati | 96 | +1 lap | 9 |
| Jean Behra | Gordini | 94 | +3 laps | 11 |
| Maurice Trintignant Harry Schell | Gordini | 91 | +6 laps | 7 |
| John Barber | Cooper - Bristol | 90 | +7 laps | 16 |
| Alan Brown | Cooper - Bristol | 87 | +10 laps | 12 |
| Robert Manzon | Gordini | 67 | Wheel | 8 |
| Juan Manuel Fangio | Maserati | 36 | Transmission | 2 |
| Felice Bonetto | Maserati | 32 | Transmission | 15 |
| Nino Farina | Ferrari | 31 | Accident | 4 |
| Carlos Menditeguy | Gordini | 24 | Gearbox | 10 |
| Pablo Birger | Simca - Gordini - Gordini | 21 | Differential | 14 |
| Adolfo Schwelm Cruz | Cooper - Bristol | 20 | Wheel | 13 |
| Source: | Source: | Source: | Source: | Source: |
Question:
Which grid is constructed by Maserati and driven by Oscar Alfredo Gálvez?
Answer:
9.0