You will be given a definition of a task first, then some input of the task.
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

The city of Brest in modern day Belarus was once known as Brest-Litovsk, site of the 1918 treaty between Soviet Russia and the Central Powers. For what present day country did the word Litovsk refer?
Output:
belarus