instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
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?
answer:
taiping rebellion


question:
Richard Addinsell's most famous piece of music was used in the 1941 film 'Dangerous Moonlight', what is its title?
answer:
dangerous moonlight


question:
Confessions of an English Opium Eater, was a work by which essayist?
answer:

confessions of an english opium-eater