TASK DEFINITION: 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.
PROBLEM: Category: ELEMENT NAMES 
Clue: Found by Carl Gustav Mosander, terbium is named for Ytterby, a village in this country

SOLUTION: sweden

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

SOLUTION: desmond tutu

PROBLEM: Category: VOCABULARY 
Clue: It's what you've lost if you've been decollated

SOLUTION:
head