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: Betty Driver played which role in Coronation Street?
Example Output: betty driver

Example Input: The stars Aldebaran and Electra are in which constellation?
Example Output:
aldebaran