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: MY NAME IS BARBARA 
Clue: She appeared with Lassie in the 1949 film "The Sun Comes Up" before she played Beaver's mother on TV

Answer: barbara billingsley


Question: Category: ONTARIO 
Clue: The Ambassador Bridge, world's largest int'l suspension bridge, links Windsor, Ontario & this city

Answer: detroit, michigan


Question: Category: DO YOU MEASURE UP? 
Clue: An amount of a substance equal to its molecular weight, it's also Cindy Crawford's distinctive characteristic

Answer:
a mole