instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
What nationality was Che Guevara?
answer:
che guevara


question:
Which singer provides the voice for Chef in South Park?
answer:
chef


question:
David Furnish, Canadian filmmaker and former advertising executive is the husband of which performer?
answer:

david furnish