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

Q: Which form of dementia is named after a German psychiatrist who first described it in 1906?

A: dementia
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Q: Which race run at Chantilly in June is often referred to as the French Derby?

A: chantilly racecourse
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Q: On which date is All Saints day celebrated in the Western Church?

A:
all saints' day
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