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: WORLD LEADERS 
Clue: Unopposed, he was elected to his 5th term as president in 1998; he's been in power since 1959
[A]: fidel castro


[Q]: Category: PRESIDENTIAL LIBRARIES 
Clue: Opened in 1971, his presidential library is the farthest south
[A]: lyndon johnson


[Q]: Category: CASTLES 
Clue: The name of this large home located in Aberdeenshire means "the majestic dwelling" in Gaelic
[A]:
balmoral castle