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: CLASSICAL COMPOSERS 
Clue: The first movement of his 1868 first symphony is subtitled "Dreams of a Winter Journey"

Answer: pyotr ilyich tchaikovsky


Question: Category: HOLIDAYS & OBSERVANCES 
Clue: As the Constitutional bicentennial reminded us, the Constitution was signed on this date in 1787

Answer: september 17th


Question: Category: BUSINESS & INDUSTRY 
Clue: Automaker that introduced the alternator, power steering & electric ignition

Answer:
chrysler