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

Example Input: In which war did the Sack of Badajoz takeplace?
Example Output: siege of badajoz

Example Input: Which Noble prize-winning novelist is best known for 'And Quiet Flows the Don?
Example Output: and quiet flows the don

Example Input: Who had a top ten hit in the UK with Cupid in 1961?
Example Output:
cupid