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

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: Brenda Mae Tarpley achieved fame under what name?

A: brenda mae tarpley
****
Q: Which US-born naturalised Briton wrote Murder In The Cathedral, The Cocktail Party and The Wasteland?

A:
murder in the cathedral
****