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: Debra was looking for her cat. Sam said she'd help her. The cat was on a tree. Sam climbed up the tree but fell. The cat jumped down the tree.
 selected sentence: Sam climbed up the tree but fell.

Debra's cat is on a tree >Causes/Enables> Sam climbs up the tree but falls