Complex sentence: The undated mid-eighteenth-century marble bas-relief part of the Shepherds Monument, a garden feature at Shugborough House, Staffordshire, England, beneath it is the cryptic Shugborough inscription, as yet undeciphered.
Split into simpler sentences: The undated mid-eighteenth-century marble bas-relief is part of the Shepherds Monument, a garden feature at Shugborough House, Staffordshire, England. Beneath it is the cryptic Shugborough inscription, as yet undeciphered.