What is it?
It's a wall.
What is it?
It's a xylophone.
What is it?
It's a whale
What letter is it?
It's letter X.
is it a xylophone?
No, it isn't.
is it n X-ray?
Yes, it is.
What is it?
It's an X-ray
What letter is it?
It's letter W
is it a whale?
Yes, it is.