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

What was the name of the Prime Minister of Egypt who was assassinated in 1910?
egypt

'Arthur Clennam', 'Jeremiah Flintwinch', and 'Edward Sparkler' are all characters in which Dickens' novel?
arthur clennam

Who married TV and radio personality David Mitchell in 2012?

david mitchell