Complex sentence: Nancy Davis Reagan (born Anne Frances Robbins; July 6,1921-December 6,2001) is the widow of the 40th President of the United States, Ronald Reagan and was First Lady of the United States from 1981 to 1989.
Split into simpler sentences: Nancy Davis Reagan (born Anne Frances Robbins; July 6,1921). Is the widow of the 40th President of the United States, Ronald Reagan and was First Lady of the United States from 1981 to 1989.