Complex sentence: The song was covered by Harry Nilsson in 1969, then later by John Denver-after his death it became the title of a biography of Denver by John Collis and it also was coverd by Sheryl Crow for the movie I am Sam.
Split into simpler sentences: The song was covered by Harry Nilsson in 1969, then later by John Denver-after his death it became the title of a biography of Denver by John Collis. It was also covered by Sheryl Crow for the movie I am Sam.