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

Formerly known as Sky Dome, Rogers Centre is home to what American League baseball team, the only MLB team located outside the United States?
american league

According to the bible, Zaccariah was the father of which New Testament figure?
bible

Brian Fletcher won the Grand National on Red Rum and which other horse?

brian fletcher