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

downtown
Who sang the 'Dance version' of Petula Clarke's hit 'Downtown' and reached the top ten in 1988?

ahura mazda
In which religion is there one god called Ahura Mazda?

arcturus

What are Proxima Centauri, Sirius A, Pollux, Arcturus and Betelgeuse?