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

Input: Consider Input: Who was Minister-Chairman of the Russian Provisional Government and Prime Minister of Russia from 21 July 1917 (following the abdication of Tsar Nicholas II) to 8 November 1917 (the Bolshevik revolution), who is buried in Putney Vale Cemetery, London?

Output: russian revolution


Input: Consider Input: Which sprinter lit the Olympic flame at the 2000 Summer Olympic Games in Australia?

Output: 2000 summer olympics


Input: Consider Input: What is the most popular board game in the United States?


Output: board game