Original sentence: covers the period from his birth on December 23, 1805, to the end of 1827, when Latter Day Saints believe Smith located a set of Golden Plates engraved with ancient Christian scriptures, buried in a hill near his home in Manchester, New York
Edited sentence: covers the period from his birth on December 23, 1805, to the end of 1827, when Joseph Smith located a set of Golden Plates engraved with ancient Christian scriptures, buried in a hill near his home in Manchester, New York