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: Paul had to take out the garbage to the curb. He emptied all his small garbage cans into a large garbage can. He then took the large can out to the curb. Once the garbage man came, he brought his empty can back inside. Paul put a new bag in the can and then washed his hands.
 selected sentence: Once the garbage man came, he brought his empty can back inside.

Paul takes garbage out to the curb >Causes/Enables> The garbage man comes