Answer:
How do you discover something that does not exist?
A train just leaves a station and enters a tunnel. Where is the best place for a claustrophobic person to sit?
Mary gets in the shower, but surprisingly her hair is not wet when she gets out. How is this possible?
There were 5 children in a room. Iris drew a picture, Barry played video games, Andrew played chess, and Trina read a book. What is the fifth child, Mindy, doing?
When you put this in a heavy wooden box the box will become lighter
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around