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.

Q: Category: ACTORS & THEIR FILMS 
Clue: The title of Richard Burton's last feature film, or the year it was released

A: 1984
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Q: Category: KNOWLEDGE BY THE NUMBERS 
Clue: Number of males who served as British PM in the 1990s plus Oscars won by Tom Hanks plus protons in a helium nucleus

A: 6
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Q: Category: ARCHITECTURE 
Clue: Once a professor of astronomy, he designed the Royal Observatory at Greenwich

A:
sir christopher wren
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