Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: Created by Alex Raymond, this futuristic character first appeared in 1934. Who is he?

Answer: alex raymond


Question: Which actress played Arwen in the trilogy of films?

Answer: arwen


Question: Which is Charles Dickens' third published novel, its characters include: Madame Mantalini, Newman Noggs and Vincent Crummles?

Answer:
charles dickens