Answer:
A circle of stones, never in rows. Stacked one on the other, mystery it sows. What is it?
You need a key to receive an answer from me. The answer you'll find is straight from your mind. What is it?
What has a head, a tail, is brown, and has no legs?
In the evening I'm long, in the morning I'm smallΝΎ When seen in a ballroom, I'm nothing at all.
It's in your hand though you can not feel it. Only you and time can reveal it.
A red house is made out of red bricks. A blue house is made out of blue bricks. What is a green house made out of?