Actors Alec, Billy, Daniel and Stephen are brothers with which last name?

Act II of which 1948 fairy tale ballet by Frederick Ashton is set at a palace ball? Act II of which tragedy opens in the house of Polonius? Act III of which 1893 Engelbert Humperdinck opera features a gingerbread waltz? Act IV of which author's 1904 play includes the line "Do you believe in fairies?" 1980 acting nominees included Eileen Brennan for "Private Benjamin" and which other "E.B." for "Resurrection"? Nebraska Governor Charles Thone had to keep order when which storms struck Grand Island in June 1980? Which sport uses the parry and the thrust? Which actor, born March 30, 1937, is often said to be the subject of Carly Simon's "You're So Vain"?