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

[Q]: Which 'brothers' had a number one hit in May 1958 with 'All I Have To Do Is Dream'?
[A]: all i have to do is dream

[Q]: Who plays Isobel Crawley in the UK television series 'Downton Abbey'?
[A]: downton abbey

[Q]: In George Orwell's 'Animal Farm', what is the name of the pig who emerges as the leader of the farm following the overthrow of 'Farmer Jones'?
[A]:
george orwell