Instructions: In this task, you will be given a short story. One sentence from the story is chosen. Consider the likely emotions of the participants in the sentence and those affected by it. Is any of these emotions caused by the sentence? You should write your answer in the form " A >Causes> B". Try to use phrases and sentences from the story to compose your answer when possible. For the sentence describing the result, you must use the verb feel(s).
Input: story: John walked outside one weekend morning. He noticed that his yard was incredibly sloppy and overgrown. John went to his shed and pulled out his lawn mower. After starting it up, John began to mow his lawn. He worked for an hour, and then his yard looked great again.
 selected sentence: He worked for an hour, and then his yard looked great again.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
John's lawn looks great >Causes> John feel(s) happy