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

Ex Input:
Who is the only British Prime Minister to serve under 3 monarchs?

Ex Output:
prime minister of the united kingdom


Ex Input:
Come Clean was the debut album by which 2000s band?

Ex Output:
come clean


Ex Input:
Which of the Romantic poets wrote the epic semi- autobiographical poem 'Childe Harold's Pilgrimage'?

Ex Output:

childe harold's pilgrimage