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

Ex Input:
Which band had a hit with the song 'Brown Girl in the Ring'?

Ex Output:
brown girl in the ring


Ex Input:
Which country on the West African coast lies between The Democratic Republic of the Congo and Namibia?

Ex Output:
democratic republic of the congo


Ex Input:
Who in the 2005 film Alexander played Alexander the Great?

Ex Output:

alexander the great