Once upon a time there was a cave. It was completely empty except for all the air. The air was everywhere as you would expect.
But you wouldn�t expect to find a double-decker bus in a cave. And you�d be right, because there were no double-decker buses in this cave.
There were however two potato peelers in the cave. One potato peeler was lying on the ground, and the other potato peeler was lying on the ground.