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.

Category: INTERIORS 
Clue: A knot or lump on a tree, or the wood cut from it, used as veneer in Jaguar interiors
burled wood

Category: WRITERS' PRIVATE LIVES 
Clue: During WWII this Tarzan creator worked as a correspondent for the L.A. Times
edgar rice burroughs

Category: WORLD CAPITALS 
Clue: It's served by Keflavik airport

reykjavik