Is this a red pen?
No, it isn't. It is a blue pen.
Is this a calculator?
No, it isn't. It is a piece of paper.
Is this a ruler?
Yes, it is.
Is this a pencil?
Yes, it is.
Is this a ruler?
No, it isn't. It is a notebook.
Is this an eraser?
Yes, it is.
Is this a notebook?
No, it isn't. It is a calculator
Is this a book?
Yes, it is.
Is this a pair of scissors?
Yes, it is.
Is this a pencil?
No, it isn't. It is a stapler