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: HOTELS 
Clue: We'll tell you "diplomatically" that this L.A. hotel was the home of the Coconut Grove nightclub

A: the ambassador hotel
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Q: Category: FLAGS 
Clue: Christopher Columbus' flag bore a cross with their initials on either side

A: ferdinand & isabella
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Q: Category: NUCLEAR ENERGY 
Clue: Fusion reactions occur in this superhot gas made up of free electrons & free nuclei

A:
the plasma
****