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

Alejandro Amaya, Carlos Arruza, Jaime Bravo and Carmelo Torres are famous Mexican?
alejandro amaya

What nationality was Che Guevara?
che guevara

In the book by Miguel de Cervantes, who was Don Quixote's squire?

don quixote