Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Q: Which late 17th and early 18th century British architect designed Brighton Pavilion, Marble Arch, and the plan for London's Regents Park?

A: royal pavilion
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Q: What book was written by Alexandre Dumas about Edmond Dantes' imprisonment in the Chateau d'If?

A: alexandre dumas
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Q: What branch of biology, dating from the discovery of blood corpuscles by Marcello Malpighi in 1661, classifies and descibes the development of the forms of living organisms?

A:
biology
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