Is it number one?
No, it isn't.
What's this?
It's a pen.
What number is it?
It is five.
What colour is it?
It's green.
What number is it?
It's three.
What's this?
It's a ruler.
What colour is it?
It's yellow.
Is it blue?
Yes, it is.
Is it a pencil?
Yes, it is.