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

Which sprinter lit the Olympic flame at the 2000 Summer Olympic Games in Australia?
2000 summer olympics

What name is given to the murder of 7 people as part of a Prohibition Era conflict between the South Side Italian gang led by Al Capone and the North Side Irish gang led by Bugs Moran in Chicago, Illinois, in 1929?
bugs moran

Allergic Rhinitis has what more common term?

allergic rhinitis