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

Q: Released last month, People, Hell and Angels is a posthumous album made up of songs recorded by which artist in 1969 ?

A: angel
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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
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Q: Who became British Prime Minister on November 1990?

A:
prime minister of the united kingdom
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