Answer:
In the land of the green glass door there are riddles but no answers, sheets but no blankets, and books but no words. Name something found in the land of the green glass door.
It cannot be seen, it weighs nothing, but when put into a barrel, it makes it lighter.
What is the thing that stays the same size, but the more it's used the more it decreases?
A seed am I, three letters make my name. Take away two and I still sound the same.
What type of paper can you neither read nor write on?
What sphinxes employ and players enjoy.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?