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: Lou bought a newly constructed home. He already submitted a change of address form with the USPS. Lou checked his box everyday for a month and it was empty. He called the post office concerned and found that they had his mail. They weren't able to send it because his new address was new.
 selected sentence: He already submitted a change of address form with the USPS.

Lou moved to a new home >Causes/Enables> Lou submitted a change of address form