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]: Kirk Douglas played the title role in which 1960 film about Roman slaves?
[A]: spartacus


[Q]: Which actor plays the title role in the Harry Potter films?
[A]: daniel radcliffe


[Q]: In the final Harry Potter novel, who becomes headmaster of Hogwarts School?
[A]:
severus snape