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

[EX Q]: In which range of mountains are the two highest peaks Aconcagua and Ojos Del Salado?
[EX A]: aconcagua

[EX Q]: With what sport is Dennis Compton associated?
[EX A]: denis compton

[EX Q]: Shire, Arabian, Mustang, and Hackney are types of?
[EX A]:
mustang