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: PRESIDENTIAL FIRSTS 
Clue: 1st president to refuse a 3rd term
george washington

Category: PASTIMES 
Clue: The FCC assigns call signs, like N8DNR, to use in this hobby
ham radio

Category: WAR CORRESPONDENTS 
Clue: Later a prime minister, he covered the Boer war as a correspondent for the London Morning Post

winston churchill