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.

Input: Consider Input: Category: OPERAS BY CONTINENT 
Clue: "Aida "

Output: africa


Input: Consider Input: Category: -OLOGIES 
Clue: Seismology studies the seismic waves produced by these plate shifts

Output: earthquakes


Input: Consider Input: Category: ALPHABETICALLY FIRST 
Clue: Of our solar system's 9 planets


Output: earth