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:
| Name | Circuit | Date | Winning driver | Winning constructor | Report |
| --- | --- | --- | --- | --- | --- |
| Garda Circuit | Salò | 22 May | Eugenio Silvani | Bugatti | Report |
| Targa Florio | Madonie | 29 May | Giulio Masetti | Fiat | Report |
| Coppa della Cascine | Florence | 6 June | "Deo" | Chiribiri | Report |
| Mugello Circuit | Mugello | 24 July | Giuseppe Campari | Alfa Romeo | Report |
| Coppa Florio | Brescia | 4 September | Jules Goux | Ballot | Report |
| Gentlemen Grand Prix | Brescia | 11 September | Giulio Masetti | Mercedes | Report |
| Coppa Montenero | Montenero | 25 September | Corrado Lotti | Ansaldo | Report |
Question:
Which race did Mercedes win?
Answer:
Gentlemen Grand Prix