Barbara, Carignan, Cinsaut, and Nebbilo are verities of what?

Question
What bird has the most feathers per square inch?
Answer
Penguin

Question
What flavours the liquor chambord?
Answer
Raspberries

Question
What sport do you compete for Currie cup and Ranfurly Shield?
Answer
Rugby Union

Question
The Necromancer in The Hobbit became who in later works?
Answer
Sauron