Complex sentence: Mark William Latham (born 28 February 1961) is the former Australian politician who was the leader of the Australian Labor Party and Leader of the Opposition from December 2003 to January 2005.
Split into simpler sentences: Mark William Latham (born 28 February 1961) is a former Australian politician. He was the leader of the Australian Labor Party and Leader of the Opposition from December 2003 to January 2005.