Answer:
It is in every mountain, it's not in any hill, it's not in all the world, and yet it's in the mill.
The part of the bird, that is not in the sky, Which can swim in the ocean and always stay dry. What is it?
It weighs next to nothing but no one can hold it for long. What is it?
A prehistoric reptile that lives today and the inspiration for the name of a popular sports drink.
Kids play it and Michelangelo sculpted with it.
What is always coming but never arrives?