Complex sentence: The Quest for the Lost Ark of the Covenant is a 1992 book by British researcher Graham Hancock, in which the author describes his search for the Ark of the Covenant and proposes a theory of the ark's historical movements and current whereabouts.
Split into simpler sentences: The Quest for the Lost Ark of the Covenant is a 1992 book by British researcher Graham Hancock. The book narrates the endeavours of the writer in searching for the Ark of the Covenant and proposes a theory of its historical movements and current whereabouts.