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

[EX Q]: Pirate Edward Teach was better known by what nickname?
[EX A]: edward teach

[EX Q]: In which city were the 1912 Olympic games held Oslo, Antwerp or Stockholm?
[EX A]: 1912 summer olympics

[EX Q]: What nationality was the painter Diego Rivera?
[EX A]:
diego rivera