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.

Example Input: Category: DR. WHO... 
Clue: specializes in X-rays & elements, like the one with the atomic number 88 for treating diseases
Example Output: a radiologist

Example Input: Category: WHICH U.S. CABINET DEPARTMENT? 
Clue: The U.S. Geological Survey
Example Output: department of the interior

Example Input: Category: HITHER & YON 
Clue: Small numbers of reindeer imported to Alaska from this Russian region eventually increased to more than 500,000
Example Output:
siberia