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

[Q]: Which Noble prize-winning novelist is best known for 'And Quiet Flows the Don?
[A]: and quiet flows the don


[Q]: Which is the only Avril Lavigne song to have reached No.1 in the US Billboard Chart?
[A]: avril lavigne


[Q]: Concord is the capital of which American state?
[A]:
concord