useless trivia: What Word Means: Self-contained Underwater Breathing Apparatus?

Questions

Although his remains were found to be missing in 1864, where was Voltaire buried?

According to the Brothers Grimm, how tall was Tom Thumb?

How many Olympic gold medals has Mark Spitz won?

Where in Germany are the Passion Plays held?

What is the interval between Passion Plays held at Oberammergau in Germany?