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: We like to climb stairs. We climb them everyday. Sometimes we fall. Today we tried to climb a lot of stairs. We made it all the way to the top.
 selected sentence: Sometimes we fall.

We climb >Causes/Enables> We fall