Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Q: Aragon and Castile joined to form which country?

A: aragon
****
Q: Beaune, Nuits St George and Chambertin are wines from which French wine region?

A: beaune
****
Q: Who resigned as Apple CEO in 2011?

A:
apple inc.
****