Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
--------
Question: What book was written by Alexandre Dumas about Edmond Dantes' imprisonment in the Chateau d'If?

Answer: alexandre dumas


Question: What city is closest to Copacabana beach?

Answer: copacabana, rio de janeiro


Question: What is the name of the village fishmonger in the 'Asterix' series of cartoons?

Answer:
asterix