Complex sentence: Greg Jarrett is an American radio personality who was a longtime radio news reporter in San Francisco and who is due to become the morning host on WGN-AM radio in Chicago on June 22,2009.
Split into simpler sentences: Greg Jarrett is an American radio personality who was a longtime news reporter in San Francisco. He is due to become the morning host on WGN-AM radio in Chicago on June 22,2009.