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

Ex Input:
Kronos (or Cronus) was the Greek equivalent of which Roman god?

Ex Output:
cronus

Ex Input:
Which strong man appears in the Bible in the Book of Judges?

Ex Output:
book of judges

Ex Input:
In which city were the 2002 Winter Olympic Games held?

Ex Output:
2002 winter olympics