Complex sentence: Sergey Gerasimovich Mitin (born June 14,1951 Gorky, Soviet Union) is the former Governor of Novgorod Oblast, Russia since August 7,2007 to February 13,2017.
Split into simpler sentences: Sergey Gerasimovich Mitin (born June 14,1951 Gorky, Soviet Union) is a Russian politician. Mitin served as Governor of Novgorod Oblast, Russia from August 7,2007 to February 13,2017.