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: Joe was sick and worried. he knew that his high school dance was only three days away. If he was still sick, his mom would not let him go! Then he began to feel better. By the night of the dance, he was well again!
 selected sentence: he knew that his high school dance was only three days away.

Joe's high school has a dance >Causes/Enables> Joe knows his high school dance is only three days away