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

Q: Which was the title of the 7th and final book in the Chronicles of Narnia by C.S. Lewis?

A: the chronicles of narnia
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Q: What is the SI unit of capacitance?

A: capacitance
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Q: Who was the victorious leader in the conflict known as The Battle Of Washita River that took place on November 27th 1868, he died on June 25th 1876 aged 36 ?

A:
battle of washita river
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