 The victorious knight proves to be none other than Bachelor Sanson Carrasco, who forces Don Quixote to vow that he will not unsheathe his sword for a whole year.The sorrowful knight, true to his vow, takes up his warlike gear and, followed by Sancho, sets out for home.When Petipa revived "Don Quixote" in 1871 for the Imperial Ballet of St Petersburg, many changes were made to the libretto and he requested a new fifth act in three scenes from Minkus.