Answer:
How do you discover something that does not exist?
What goes up the hill and down the hill, And spite of all, yet stand still?
What can you hold in your right hand but never in your left hand?
Captain ali is the captain of the ship the captain of the ship is captain ali what is the name of the ship
The yellow house has yellow window, the red house has red windows, what colour windows does the green house have?
I only exist when you are here. Where you never were I can never be.