Detailed Instructions: You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
Q: Category: WORLD GEOGRAPHY 
Clue: The Lusatian Mountains, in the western Sudeten range, form part of the border between these 2 countries
A:
germany & the czech republic