Complex sentence: John Duncan Anderson (born 14 November 1956), Australian politician, has been Deputy Prime Minister of Australia and Leader of the rural-based National Party of Australia since July 1999.
Split into simpler sentences: John Duncan Anderson (born 14 November 1956) is an Australian politician. He currenlty serves as the Deputy Prime Minister of Australia and has been the Leader of the rural-based National Party of Australia since July 1999.