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

Example 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?
Example Output: taiping rebellion

Example Input: Which BBC current affairs programme, the longest-running in the world, is 60 years old this year ?
Example Output: bbc

Example Input: Which actress was nominated for a best actress Oscar for her performance in the 1995 film `Casino`?
Example Output:
casino