Input question: Who had a No 1 in the 90's with Turn Back Time

Output answer: aqua

Input question: On the Beatles Sergeant Pepper album cover who is the sergeant

Output answer: ringo starr

Input question: Seoul is the capital of South Korea. What is the capital of North Korea?

Output answer: pyongyang

Input question: What is the surname of the family in the 1989 film 'National Lampoon's Christmas Vacation'?

Output answer:
griswold