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

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?
taiping rebellion

Aragon and Castile joined to form which country?
aragon

Who supplied the voice of the genie in the 1992 film `Aladdin`?

aladdin