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

Ex Input:
To which actress is Daniel Craig married?

Ex Output:
daniel craig


Ex Input:
Which former Portuguese African Colony joined the British Commonwealth in 1995?

Ex Output:
commonwealth of nations


Ex Input:
Which British city is served by 'Abbotsinch Airport'?

Ex Output:

glasgow airport