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

[EX Q]: 'Arthur Clennam', 'Jeremiah Flintwinch', and 'Edward Sparkler' are all characters in which Dickens' novel?
[EX A]: arthur clennam

[EX Q]: Of which Canadian Province is Labrador a part?
[EX A]: canada

[EX Q]: Which film musical starred Lee Marvin, Clint Eastwood and Jean Seberg?
[EX A]:
lee marvin