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: I went out my front door. I walked down the driveway. I walked up to my mailbox. I pulled my mail from the mailbox. I walked back up my driveway to my door.
 selected sentence: I walked down the driveway.

I go outside my house >Causes/Enables> I walk down the driveway