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

[EX Q]: Which horse won the 2008 Grand National?
[EX A]: 2008 grand national

[EX Q]: Where is the Barbary Coast?
[EX A]: barbary coast

[EX Q]: What country used the Drachma as its currency, before switching to the Euro in 2001?
[EX A]:
greek drachma