Misc: In what year did Jean-Caude Killy win the Olympic grand slam?

Questions

What does the Latin phrase Deo Volente mean?

Hagiology is the study of what?

In Greek Myth who solved the riddle of the Sphinx?

What was the profession of J.B.Dunlop, inventor of the pneumatic tyre?

In Shakespeare's 'Merchant of Venice', with whom does Portia fall in love?