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

[Q]: Which race run at Chantilly in June is often referred to as the French Derby?
[A]: chantilly racecourse


[Q]: Which river begins in the Rocky Mountains in south-west Colorado, crosses New Mexico and forms the border between Mexico and the USA before reaching the Gulf of Mexico?
[A]: new mexico


[Q]: What is the cathedral church of Rome?
[A]:
cathedral