Complex sentence: The original broadcast of "Lonesome Dove" took place on February 5,1989, and it drew huge ratings for CBS and virtually revamped the entire 1989-1990 television season.
Split into simpler sentences: The original broadcast of "Lonesome Dove" took place on February 5,1989. It drew huge ratings for CBS and virtually revamped the entire 1989-1990 television season.