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: Miss Rosa Dartle is a character in which Charles Dickens novel?

Answer: james steerforth

Question: On which island is Nassau, the capital of the Bahamas?

Answer: nassau

Question: Which English actor played the title role in the 19768 family film Blackbeard's Ghost?

Answer:
blackbeard's ghost