Question: What is the english name of the encyclical which was written by the Bishop of Rome and the sovereign of Vatican City?
Sentence (from "Pope Francis"): Pope Francis (Latin: "Franciscus" ; Italian: "Francesco" ; Spanish: "Francisco" ; born Jorge Mario Bergoglio; 17 December 1936) is the 266th and current Pope of the Catholic Church, a title he holds "ex officio" as Bishop of Rome, and sovereign of Vatican City.
Relevant evidence: Yes