human
Look, dad! See!
gpt
What is it, Tom?
human
A sheet on which I did some figuring. It is no good, but it was in with the plans. It must have dropped out.
gpt
Do you mean that some one has been in here and taken the plans of your new aeroplane, Tom?
human
That's just what I mean! They sneaked in here while you were dozing, took the plans, and jumped out of the window with them. On the way this paper fell out. It's the only clue we have. Stay here, dad. I'm going to have a look.