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 the Women's Singles at the 2015 Australian Open Tennis Championships?

Ex Output:
the championships, wimbledon


Ex Input:
The Brooklyn Bridge crosses which river?

Ex Output:
brooklyn bridge


Ex Input:
And Another Thing... by Eoin Colfer, published in 2009, eight years after the death of the author of the first five, is described as the sixth in which trilogy of books?

Ex Output:

and another thing...