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

Ex Input:
Which 1995 'Space' move starred Tom Hanks; Bill Paxton and Kevin Bacon?

Ex Output:
tom hanks


Ex Input:
'Arthur Clennam', 'Jeremiah Flintwinch', and 'Edward Sparkler' are all characters in which Dickens' novel?

Ex Output:
arthur clennam


Ex Input:
What is the name of the main peak of the group of hills which form most of Holyrood Park in Edinburgh, Scotland?

Ex Output:

edinburgh