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: VIVA MEXICO! 
Clue: President from 2000 to 2006, this "sly" guy had formerly been president of Coca Cola de Mexico

A: fox
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Q: Category: ELEMENT NAMES 
Clue: In 1828 a Norse god thundered onto the periodic table in the name of this element, No. 90

A: thorium
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Q: Category: "Z"-ING IS BELIEVING 
Clue: 2 main sects of this philosophical school were introduced to Japan in the 12th & 13th centuries

A:
zen
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