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

Example Input: Against which country did Britain fight 'The Cod Wars'?
Example Output: cod wars

Example Input: What American swimmer won eight gold medals at the 2008 Olympics?
Example Output: 2008 summer olympics

Example Input: Who played 'Robert Langdon' in 'The Da Vinci Code'?
Example Output:
the da vinci code