Table:
text: 1927 Grand Prix season
Other Grands Prix
Other Grands Prix
Name_ Circuit Date_ Winning_driver Winning_constructor Report
Rome Grand Prix Parioli 12 June Tazio Nuvolari Bugatti Report
Picardy Grand Prix Péronne 12 June Philippe Auber Bugatti Report
Thuin Circuit Thuin 12 June Joseph Reynartz Bugatti Report
Eifelrennen Nürburgring 19 June Rudolf Caracciola Mercedes-Benz Report
Bologna Prize Bologna 19 June Emilio Materassi Bugatti Report
ACF Free For All Race Montlhéry 2 July Albert Divo Talbot Report
Sporting Commission Cup Montlhéry 2 July André Boillot Peugeot Report
Grand Prix de la Marne Reims-Gueux 10 July Philippe Étancelin Bugatti Report
San Sebastián Grand Prix Lasarte 25 July Emilio Materassi Bugatti Report
Coppa Acerbo Pescara 6 August Giuseppe Campari Alfa Romeo Report

Question: Who was the winning constructor of the 1927 Grand Prix season at Parioli circuit?