Is this your pen? (yes)
Yes it is.
Is this your pen? (yes)
marker
Is this your pencil? (yes)
pencil
Is this your pen? (NO)
pen
Is this your book? (yes)
book
Is this your book? (yes)
book
Is this your eraser? (yes)
eraser
Is this your pen? (yes)
pen
Is this your pencil? (yes)
pencil
Is this your marker? (yes)
marker
Is this your eraser? (NO)
eraser
Is this your marker? (NO)
marker
Is this your ruler? (NO)
ruler
Is this your book? (NO)
book
Is this your classroom? (NO)
classroom
Is this your ruler? (yes)
ruler
Is this your pencil? (NO)
pencil
Is this your ruler? (NO)
ruler
Is this your eraser? (NO)
eraser
Is this your teacher? (NO)
teacher