Definition: In this task, you will be given a short story. One sentence from the story is chosen. Consider the events that happen before that sentence, or are likely to have happened before it. Does any of them directly cause it, or simply make it possible? You should write your answer in the form " A >causes/enables> B". Try to use phrases and sentences from the story to compose your answer when possible.
Input: story: A young boy named Bill was having trouble writing his name. He could not complete his assignment for school because of this. He went to his parents and asked them for help. His dad was able to teach him how to write his name. The boy was excited and completed his homework in time.
 selected sentence: The boy was excited and completed his homework in time.

Bill's dad teaches him >Causes/Enables> Bill completes his somework