Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
--------
Question: Which Irish boxer was nicknamed the Clones Cyclone?

Answer: boxing


Question: Who married the woman who was to become Queen Beatrix of the Netherlands, on 10 March 1966?

Answer: beatrix


Question: Who played 'Emma Peel' in the 1998 film 'The Avengers'?

Answer:
the avengers