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: Emma had been trying to pull her loose tooth out for days. She was afraid to pull it quite hard enough to get it out. Her parents kept trying to let them help but she said no. One evening her brother gave her a wad of bubblegum. She felt a tug as she was chewing as her tooth came out in the gum.
 selected sentence: One evening her brother gave her a wad of bubblegum.

Emma's brother gets gum >Causes/Enables> Emma's brother gives her gum