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

Ex Input:
Ashgabat is the capital of which country, a former Soviet republic in Asia?

Ex Output:
ashgabat


Ex Input:
Which pop star won a Golden Globe in 1962 for his role in Come September?

Ex Output:
come september


Ex Input:
Benito Juarez international airport is in which country?

Ex Output:

mexico city international airport