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

[EX Q]: Laurence Olivier directed and starred in a 1944 film, which began in the Globe Theatre and then gradually shifted to a realistic evocation of the Battle of Agincourt, which was adapted from which one of Shakespeare's plays?
[EX A]: battle of agincourt

[EX Q]: 'Dookie' and '21st. Century Breakdown' are albums by which American rock band?
[EX A]: 21st century breakdown

[EX Q]: Dig 'Em Frog is the mascot for what brand of cereal?
[EX A]:
dig 'em frog