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 played Captain Jean-Luc Picard in the television series 'Star-Trek: The Next Generation'?

Output: jean-luc picard


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: In what country did the Boxer War, or Boxer Rebellion, happen?


Output: boxer rebellion