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

[EX Q]: 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?
[EX A]: taiping rebellion

[EX Q]: What hit song by the Crash Test Dummies comprised four three-letter words all containing the same letter?
[EX A]: crash test dummies

[EX Q]: Which legendary rock band was formed in 1973 by brothers Angus and Malcolm Young?
[EX A]:
angus young