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

Example Input: The rivers Axe, Brue, Cary, Parrett, eta, are in which English county?
Example Output: castle cary

Example Input: With eight goals which Barcelona player was the leading scorer in the 2009-10 Champions League?
Example Output: barcelona

Example Input: What is the name of the paranoid android in the novel 'The Hitchhiker's Guide to the Galaxy' by Douglas Adams?
Example Output:
the hitchhiker's guide to the galaxy