Complex sentence: Brian David Schweitzer (born September 4,1955) is an American politician who served as the 23rd Governor of Montana from January 5,2005 to January 7,2013.
Split into simpler sentences: Brian David Schweitzer (born September 4,1955) is an American politician. He served as the 23rd Governor of Montana from January 5,2005 to January 7,2013.