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 consistency, answers should be in all lower cased letters.

[EX Q]: Category: ELTON JOHN 
Clue: In 1997 Elton John recorded a new version of this song as a tribute to Princess Diana
[EX A]: "candle in the wind"

[EX Q]: Category: STAGE NAMES 
Clue: Riley is the first name of this guitarist whose stage initials stand for "Blues Boy"
[EX A]: b.b. king

[EX Q]: Category: THE UNICORN 
Clue: This unicorn-like whale's "horn" is really a long tusk
[EX A]:
narwhal