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 woke up to see that his car was snowed in. Joe put on his warm cloths to go outside. Joe went outside and got his snow shovel. Joe worked for a long time shoveling the snow. Joe was proud when he saw he had cleared his car out.
 selected sentence: Joe worked for a long time shoveling the snow.

Joe's car is snowed in >Causes/Enables> Joe shovels snow