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

Which late 17th and early 18th century British architect designed Brighton Pavilion, Marble Arch, and the plan for London's Regents Park?
royal pavilion

Which British Prime Minister delivered the 'Winds of Change' speech in 1960?
wind of change

Who won the Oscar for Best Actor in 2010 for his role as Otis Blake in the film 'Crazy Heart'?

crazy heart