Original: To this end, in May 1933, he petitioned the Italian Premier, Benito Mussolini, "to ask his assistance in guaranteeing that the Siena quarries sent nothing inferior to the official sample marble".
Simplified: To this end, in May 1933, he petitioned the Italian premier, Benito Mussolini, "to ask his assistance in guaranteeing that the Siena quarries sent nothing inferior to the official sample marble".