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: Which of the American Idol judges has been there for all 10 seasons?

Answer: american idol


Question: Which BBC current affairs programme, the longest-running in the world, is 60 years old this year ?

Answer: bbc


Question: What is the state capital of West Virginia?

Answer:
charleston, west virginia