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

Example Input: 'Highway 61 Revisited' and 'Blood On The Tracks' were both albums released by which popular singer?
Example Output: highway 61 revisited

Example Input: Which 20th century British prime minister had the longest surname ?
Example Output: prime minister of the united kingdom

Example Input: Cry Cry Cry was the first single released by whom?
Example Output:
cry! cry! cry!