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

Example Input: Which band had a hit with the song 'Brown Girl in the Ring'?
Example Output: brown girl in the ring

Example Input: Dreams from my father, a story of race and heritance is about which politician?
Example Output: dreams from my father

Example Input: In 1965, which American pop group, whose original members include the legendary David Crosby, had a No.1 hit with the Bob Dylan song, Mr Tambourine Man?
Example Output:
bob dylan