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

Ex Input:
And Then There Were None?

Ex Output:
and then there were none


Ex Input:
Richard Block and David Quayle founded which British-based DIY retailing company in 1969?

Ex Output:
david quayle


Ex Input:
Which English composer wrote the opera Dido and Aeneas, whose first public performance was in 1684?

Ex Output:

dido and aeneas