Complex sentence: This moat and its cleaning was one of the egregious examples of MPs' expenses claims which aroused public ire during 2009 and contributed to the retirement of its owner, Douglas Hogg, from the House of Commons.
Split into simpler sentences: This moat and its cleaning was one of the egregious examples of MPs' expenses claims which aroused public ire during 2009. This contributed to the retirement of its owner, Douglas Hogg, from the House of Commons.