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

Example Input: 'Arthur Clennam', 'Jeremiah Flintwinch', and 'Edward Sparkler' are all characters in which Dickens' novel?
Example Output: arthur clennam

Example Input: In which wars did the battles of Towton and Barnet take place?
Example Output: battle of barnet

Example Input: Who played the title role in the UK television series 'Dr Quinn, Medicine Woman'?
Example Output:
dr. quinn, medicine woman