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: What is the smallest country in Central America Costa Rica, Venezuela or El Salvador?

Answer: central america

Question: Which actor spoke the line I love the smell of napalm in the morning* in the 1979 film Apocalypse Now?

Answer: apocalypse now

Question: What heavy metal band has a one-armed drummer?

Answer:
drummer