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

Ex Input:
What is the SI unit of capacitance?

Ex Output:
capacitance


Ex Input:
In which US state would you find the cities of Chesapeake, Roanoke and Fredericksburg?

Ex Output:
fredericksburg


Ex Input:
Which 1996 film had characters 'Renton', 'Sick Boy', 'Spud' and 'Begbie'?

Ex Output:

begbie