 Complete the following phrase:  There was a 4-week gap between the Monaco and Canadian Grands Prix as the Belgian Grand Prix at Spa-Francorchamps was postponed until September, after the newly-laid track surface, to help deal with wet weather, melted due to the hot weather conditions. The Canadian Grand Prix at the Circuit Gilles Villeneuve in Montreal produced a Ferrari 12, with Alboreto winning ahead of Johansson, and Prost finishing third. It was Ferraris first 12 since the 1983 Dutch Grand Prix and their last until the 