Misc: In 1921 Barney---------- , 1st to receive a permanent artificial heart, born.?

Questions

Who wrote the opera' The Turn of the Screw'?

Which Pope died on today's date in 1978?

Who were the two disappointed candidates when Richard Nixon was elected as US President in 1968?

South Africa's Robben Island takes its name from which creatures?

What was the name of the submarine that sank in the Barents Sea in August this year?