Which island is southernmost of the main Japanese islands?

Kyushu

Which actress starred as Mia Thermopolis in "The Princess Diaries"? What legendary American producer is known for creating the "Wall of Sound"? Which popular R&B singer released the 2004 album "Confessions"? Which Marvel heroine hails from a hidden sect of assassins known as the Hand before becoming a vigilante? Who discovered the structure of the DNA double helix?