TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: What was the currency of Austria before the Euro?

SOLUTION: austria

PROBLEM: 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?

SOLUTION: taiping rebellion

PROBLEM: Who released the album Do You Like Rock Music?

SOLUTION:
do you like rock music?