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

Ex Input:
Christian Grey is a character in what recent book trilogy?

Ex Output:
christian grey


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

Ex Output:
2002 winter olympics


Ex Input:
Who did the Italian former model Carla Bruni marry in February 2008?

Ex Output:

carla bruni