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

Ex Input:
Who won a Gold Medal for Britain in the men's 100 metres at the 1992 Summer Olympic Games in Barcelona?

Ex Output:
britain

Ex Input:
To which actress is Daniel Craig married?

Ex Output:
daniel craig

Ex Input:
Bayer Designations relate to which celestial bodies?

Ex Output:
astronomical object