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

On which date do we celebrate 'Boxing Day'?
boxing day

Which Afro American super model, TV personality and singer hosts the TV show, America's Next Top Model and also has her own daytime TV chat show?
america's next top model

Which historical figure has been played on film and TV by Richard Harris, Tim Roth and Dominic West?

dominic west