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.

[EX Q]: Whose opera La gazza ladra premiered in 1817?
[EX A]: gioachino rossini

[EX Q]: Which English singer/songwriter/musician wrote the Tremeloes hit 'Here Comes My Baby' at the age of eighteen?
[EX A]: cat stevens

[EX Q]: The song Leaving on a jet plane was a number 1 hit for Peter, Paul and Mary in 1970. Which successful recording artist wrote this song?
[EX A]:
john denver