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

Ex Input:
Which US state was the title of a no. 1 hit for the Bee Gees in 1967?

Ex Output:
bee gees


Ex Input:
What was Bon Jovi's first UK top ten hit single?

Ex Output:
bon jovi


Ex Input:
The borders of which country which became independent in 1971 were established with the partition of Bengal and India in 1947, when the region became the eastern wing of the newly formed Pakistan?

Ex Output:

india