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

Example Input: Which pop group consisted of Huw Bunford, Clan Caren, Dafydd Leuan, Guto Price and Gryff Rhuys?
Example Output: huw bunford

Example Input: Miss Rosa Dartle is a character in which Charles Dickens novel?
Example Output: james steerforth

Example Input: Which unsuccessful Apollo program was launched in April 1970?
Example Output:
apollo program