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

[Q]: Which is the largest continent on Earth?
[A]: earth


[Q]: Richard Block and David Quayle founded which British-based DIY retailing company in 1969?
[A]: david quayle


[Q]: What was the profession of Wyatt Earp`s sidekick Doc Holiday?
[A]:
doc holliday