answer: #Person1# cannot find #Person1#'s school bag. #Person2# asks #Person1# that when #Person1# last saw the school bag. Then #Person2# finds it under the blanket.
documents: #Person1#: Have you seen my school bag, Mom? I've been looking for it everywhere.
  #Person2#: I hope you didn't leave it in school. You never know where you put your things. When did you last see it?
  #Person1#: Last night before I went to bed, I think. I remember putting it on the desk.
  #Person2#: Really? If you put it there, it should still be there. No one has been to your room. So it must be here somewhere.
  #Person1#: Yes, but where? That's what I want to know. Oh, dear, it's about the time for the school bus.
  #Person2#: Hey, what's that under your blanket at the foot of your bed?