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

[EX Q]: The Bryce Canyon and Zion National Parks are in which US state?
[EX A]: bryce canyon national park

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

[EX Q]: David Low created what pompous British cartoon officer character, first appearing in London's Evening standard in the 1930s?
[EX A]:
david low