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.

Category: LABOR UNION PRESIDENTS 
Clue: This current union president was the youngest person ever to receive a star on the Hollywood Walk of Fame
melissa gilbert

Category: CANADIAN CITIES 
Clue: The name of this provincial capital means "queen" in Latin
regina, saskatchewan

Category: PHRASE ORIGINS 
Clue: In 1945 George Orwell coined this 2-word phrase for "an epoch as horribly stable as the slave empires of antiquity"

cold war