Misc: Two islands are situated in San Francisco harbour. One is Alcatraz, name the other?

Questions

In which North Italian city is a world renowned opera season held annually in the Roman arena during July and August?

Which motorway is, being developed as a ring motorway round Manchester?

Transylvania is in which present day country?

Which drink was advertised as 'The Wodka from Varrington'?

In which year was Louis the Sixteenth of France executed?