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

[Q]: Which TV character has sisters called Daisy and Rose?
[A]: daisy

[Q]: Who played the title role in the 1955 film 'Davy Crockett, King Of The Wild Frontier'?
[A]: davy crockett

[Q]: The city of London in Ontario, Canada stands on which river?
[A]:
city of london