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

Answer: sweden


Question: Category: "PAR"TY TIME 
Clue: It's equal to 3.26 light years

Answer: parsec


Question: Category: FAMOUS AMERICANS 
Clue: Helen Keller's "Miracle Worker", this teacher was inducted into the National Women's Hall of Fame in 2003

Answer:
annie sullivan