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 painted The Card Players, at Feb 2012 the most expensive artwork in the world?

Output: the card players


Input: Consider Input: Who served in the Crimean War (1854 - 56), was responsible for suppressing the Taiping rebellion in China in 1860, was governor of the Sudan 1877 - 79, and died there?

Output: taiping rebellion


Input: Consider Input: Which US President was shot by assassin Charles J Guiteau in 1881?


Output: charles j. guiteau