Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

[Q]: Which king experienced regicide at the hands of Shakespeare's Macbeth?
[A]: king duncan


[Q]: What is the name of Humphrey Bogart's character in the film 'Casablanca'?
[A]: rick blaine


[Q]: Which is Europe's smallest state?
[A]:
vatican city