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

Ex Input:
Which group had a top ten hit with 'Driving in My Car' in 1982?

Ex Output:
driving in my car


Ex Input:
What's the name of Doctor Who's home planet ?

Ex Output:
doctor who


Ex Input:
Which band, formed in Salford in 1976, contained Ian Curtis, Bernard Sumner and Peter Hook?

Ex Output:

bernard sumner