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: My lips were bleeding. I was at school. I had on a coat. A kid zipper up my zipper. My lip was stuck in the zipper.
 selected sentence: My lips were bleeding.

My lips get stuck in the zipper >Causes/Enables> My lips bleed