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.

Omega is the last letter of the Greek alphabet, which is the penultimate letter?
psi

Which city is the home of the Palais du Luxembourg?
paris

What is the name of the wizard who runs the Hogwarts School of Witchcraft and Wizardry in the Harry Potter books and films?

albus dumbledore