Complex sentence: Due to some similarities with "Piers Plowman", it was suggested by W. W. Skeat, in the 19th century, that William Langland wrote the piece, but this theory is no longer accepted by the academic community.
Split into simpler sentences: Due to some similarities with "Piers Plowman", it was suggested by W. W. Skeat, in the 19th century, that William Langland wrote the piece. This theory is no longer accepted by the academic community.