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: Brad's feet hurt. He needed new shoes. His old shoes were too small. He bought a brand new pair. His feet felt better than ever!
 selected sentence: His old shoes were too small.

Brad had old shoes which are small >Causes/Enables> He needed new shoes.