Complex sentence: On February 27,1968, Lymon was found dead in his grandmother's bathroom from a heroin overdose and by the 1970s Garnes had died from a heart attack and on September 5,1978, Joe Negroni died from a cerebral hemorrhage.
Split into simpler sentences: On February 27,1968, Lymon was found dead in his grandmother's bathroom from a heroin overdose. By the 1970s, Garnes had died from a heart attack, and on September 5,1978, Joe Negroni died from a cerebral hemorrhage.