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

Ex Input:
Seymour is the family name of which English duke?

Ex Output:
duke


Ex Input:
Who played Lionel Hardcastle in the TV series 'As Time Goes By'?

Ex Output:
as time goes by


Ex Input:
Which religion's holy book is the Adi Granth?

Ex Output:

guru granth sahib