story: A spy wrote a secret message on a piece of paper. He then folded it up and placed it in a library book. He took the book back to the library and hid it in the stacks. Soon after, another spy picked up the book. He flipped through the pages and took secret message.
 selected sentence: A spy wrote a secret message on a piece of paper.
A spy want(s) to send a secret message >Motivates> A spy writes a secret message on a piece of paper