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: ANNIVERSARY GIFTS 
Clue: In one form or another you can fork over this metal on the 5th or 25th anniversary

Output: silver


Input: Consider Input: Category: ANTARCTICA 
Clue: A research base at the South Pole is co-named for these 2 explorers, the first 2 to reach it

Output: amundsen


Input: Consider Input: Category: MEDICINE 
Clue: 19th century physiologist Claude Bernard found how this organ converts sugar to glycogen & stores it


Output: the liver