Original sentence: He is perhaps best known for having met Attila the Hun outside Rome in 452 in an attempt to persuade the king not to sack the city.He was a Roman aristocrat and the first Pope to whom the title "the Great" was attached
Edited sentence: "  He is perhaps best known for having met Attila the Hun outside Rome in 452 in an attempt to persuade the king not to sack the city.He was a Roman aristocrat and the first Pope to whom the title "the Great