Given an open-ended topic (movie name, a persons name, an event, sports, etc) generate a simple trivia-type question.

alfred the great
What was the name of Alfred the Great's kingdom?

doctor who
What is the title of the four-episode special of 'Doctor Who', made for the Red Nose Day telethon in the UK, broadcast in March 1999?

Deimos

Phobos and Deimos are the only two moons of what planet?