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.
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Question: Category: SWITZERLAND
Clue: Swiss banks store heaps of gold in vaults below the Bahnhofstrasse, an elegant street in this city

Answer: zurich

Question: Category: MAGIC
Clue: 2-word "conjuring" brand name for a felt-tip pen that comes in many colors

Answer: magic marker

Question: Category: IN THE BO-"D"
Clue: This large sheet of muscle provides most of the power that moves air in & out of the lungs

Answer:
the diaphragm