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.

Idris el Senussi, Emir or Cyrenu, was made the first king of what United Kingdom on 24 December 1951?
libya

Which US president was in office at the start of the Korean War?
truman

Who wrote the Harry Potter books?

j. k. rowling