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 largest country in Africa?

Answer: africa

Question: Who was the founder of the Body Shop company?

Answer: the body shop

Question: Which artist had a 'Blue Period' from 1901 to 1904 and a 'Rose Period' from 1904 to 1906?

Answer:
picasso's rose period