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]: Princess Estelle, Duchess of Ostergotland, granddaughter to King Carl XVI Gustaf, became 2nd in line to what nation's throne when born in 2012?
[A]: carl xvi gustaf of sweden


[Q]: Eric Arthur Blair, born 25 June, 1903, was the birth name of what famed English author, who penned such works as The Road To Wiggan Pier and Down and Out in Paris and London?
[A]:
down and out in paris and london