Who was First Lady of the United States from 1977 to 1981?

Who won the 1976 U.S. presidential election? The NAACP's Spingarn Medal went to dancer Alvin Ailey in 1976 and to which "rhyming" author, of "Roots", in 1977? Who sang with Elton John on the 1976 No. 1 duet "Don't Go Breaking My Heart"? Golden Richards, Billy Joe DuPree and Roger Staubach were offensive stars for which Super Bowl champions of the 1977 se… Which 1977 film opens with "A long time ago in a galaxy far, far away..."? Which teenage jockey rode Affirmed to the Triple Crown in 1978? In which 1977 film is an electrical lineman drawn to a remote mountain after an encounter with a UFO? Complete the title of the 1977 fantasy film: "___ and the Eye of the Tiger".