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.
--------
Question: Category: MR. T 
Clue: In 1975 he was named the first black Anglican dean of Johannesburg

Answer: desmond tutu


Question: Category: EMPERORS 
Clue: After becoming emperor of Ethiopia in 1930, he gave the country its first written constitution

Answer: haile selassie


Question: Category: GO SEE "CAL" 
Clue: Ancient Roman name for the region of Scotland

Answer:
caledonia