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: BELCHING 
Clue: Before a volcano belches it forth, it's called magma

Output: lava


Input: Consider Input: Category: I'M AUSTRALIAN 
Clue: In the 1910s Alexander MacRae responded to the growing beach culture by creating this swim brand

Output: speedo


Input: Consider Input: Category: 7 MODERN WONDERS 
Clue: The Itaipu, one of these 5 miles wide on the Brazil-Paraguay border, inspired a Philip Glass symphony


Output: a dam