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

Ex Input:
Bob Clampett created which character in 1938?

Ex Output:
bob clampett


Ex Input:
Who achieved fame for his ,'Confessions Of An English Opium Eater'?

Ex Output:
confessions of an english opium-eater


Ex Input:
Which British boxer was nicknamed 'The Dark Destroyer'?

Ex Output:

boxing