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

Ex Input:
The 2002 Winter Olympics were held in which city?

Ex Output:
2002 winter olympics

Ex Input:
Which former Blue Peter presenter died in April 2004, aged 41?

Ex Output:
blue peter

Ex Input:
Asturias, Aragon and Murcia are regions in which European country?

Ex Output:
aragon