Article: Brasília has also been the focus of modern-day literature. Published in 2008, The World In Grey: Dom Bosco's Prophecy, by author Ryan J. Lucero, tells an apocalypticle story based on the famous prophecy from the late 19th century by the Italian saint Don Bosco. According to Don Bosco's prophecy: "Between parallels 15 and 20, around a lake which shall be formed; A great civilization will thrive, and that will be the Promised Land." Brasília lies between the parallels 15° S and 20° S, where an artificial lake (Paranoá Lake) was formed. Don Bosco is Brasília's patron saint.

Question: Whose prophecy is 'The World In Grey' based on?
Don Bosco