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 |
| --- | --- | --- | --- | --- | --- |
| Pozzo Circuit | Verona | 21 March | Alessandro Consonno | Bugatti | Report |
| Rome Grand Prix | Valle Giulia | 28 March | Aymo Maggi | Bugatti | Report |
| Provence Grand Prix | Miramas | 28 March | Henry Segrave | Talbot | Report |
| Alessandria Circuit | Alessandria | 4 April | Giovanni Alloatti | Bugatti | Report |
| Coppa Florio | Madonie | 25 April | Meo Constantini | Bugatti | Report |
| Targa Florio | Madonie | 25 April | Meo Constantini | Bugatti | Report |
| Coppa Vinci | Messina | 2 May | Renato Balestrero | O.M. | Report |
| Tripoli Grand Prix | Tripoli | 2 May | François Eysermann | Bugatti | Report |
| Savio Circuit | Ravenna | 23 May | Gastone Brilli-Peri | Ballot | Report |
| Perugia Cup | Perugia | 30 May | Emilio Materassi | Itala | Report |
| Mugello Circuit | Mugello | 27 June | Emilio Materassi | Itala | Report |
| Camaiore Circuit | Camaiore | 18 July | Baconin Borzacchini | Salmson | Report |
| Spanish Grand Prix | Lasarte | 25 July | Meo Constantini | Bugatti | Report |
| Grand Prix de la Marne | Reims-Gueux | 25 July | François Lescot | Bugatti | Report |
| Grand Prix du Comminges | Saint-Gaudens | 1 August | Louis Chiron | Bugatti | Report |
| Coppa Acerbo | Pescara | 7 August | Luigi Spinozzi | Bugatti | Report |
| Coppa Montenero | Montenero | 15 August | Emilio Materassi | Itala | Report |
| Boulogne Grand Prix | Boulogne | 28 August | George Eyston | Bugatti | Report |
| La Baule Grand Prix | La Baule | 28 August | Louis Wagner | Delage | Report |
| Milan Grand Prix | Monza | 12 September | Meo Constantini | Bugatti | Report |
| Solituderennen | Solitude | 12 September | Otto Merz | Mercedes | Report |
| Junior Car Club 200mile race | Brooklands | 25 September | Henry Segrave | Delage | Report |
| Grand Prix du Salon | Montlhéry | 17 October | Albert Divo | Talbot | Report |
| Garda Circuit | Salò | 17 October | Aymo Maggi | Bugatti | Report |
Question:
Which driver won when o.m. was the winning constructor ?
Answer:
Renato Balestrero