Misc: in which verdi opera does violetta sing 'sempre libera'?

Questions

Albert Einstein was once offered the Presidency of _____. He declined saying he had no head for problems?

Uri Geller, the professional psychic was born on December 20 ____?

As to the origin of his alleged powers, Uri Geller maintains that they come from the distant planet of?

Ralph and Carolyn Cummins had ____ children between 1952 and 1966, all were born on the 20 February?

John D. Rockefeller gave away over US$ _________ during his lifetime?