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: Who was the only child vampire in Anne Rice`s novels?

Answer: anne rice


Question: What is the name of the main thoroughfare in Barcelona, which runs from the Placa de Catalunya to the sea?

Answer: barcelona


Question: Who was Prime Minister of Australia at the outbreak of World War I?

Answer:
australia