Once upon a time there was a girl called Kaitlin who was trying to invent a robot that could make a sandwich. The only problem was she had no battery. So she hurried down to the shop. Kaitlin needed a white battery but they only had green ones.  She got them anyway. Kaitlin was not very energetic because she was so tired after coming out of the shop. Finally she got home and built her robot. It made her a really nice sandwich.