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

[Q]: Which chemical element is named after the Latin for Copenhagen where it was discovered?
[A]: copenhagen


[Q]: In which opera does a hunchback jester help his master, the Duke of Mantua, to seduce the daughter of a courtier?
[A]: duke of mantua


[Q]: Dawson City was replaced by Whitehorse as the capital where?
[A]:
dawson city