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

[Q]: Who wrote the novel 'Brideshead Revisited'?
[A]: brideshead revisited


[Q]: Which composer's oratorios include 'The Kingdom' and 'The Dream of Gerontius'?
[A]: the dream of gerontius


[Q]: Who reached No.2 in the US Chart in 2010 with Dynamite?
[A]:
dynamite