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

Example Input: Who composed 'Eine Kleine Nachtmusik' in the 18th Century?
Example Output: eine kleine nachtmusik

Example Input: What name is given to the murder of 7 people as part of a Prohibition Era conflict between the South Side Italian gang led by Al Capone and the North Side Irish gang led by Bugs Moran in Chicago, Illinois, in 1929?
Example Output: bugs moran

Example Input: The Battle of Tewkesbury in 1471 was decisive in which conflict?
Example Output:
battle of tewkesbury