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

Which of North America's Great Lakes has the same name as a province of Canada?
canada

Who was the father of Edward the Elder, the Anglo-Saxon King from 899 to 924?
edward the elder

Bahia was the capital city of which South American city between 1552 and 1763?

bahia