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

[EX Q]: Who directed the film Black Swan (in ballet)?
[EX A]: black swan

[EX Q]: Who is the current Australian prime minister ?
[EX A]: australia

[EX Q]: Scotch, Drambuie, ice and a lemon twist are the traditional ingredients of which cocktail?
[EX A]:
scotch whisky