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: Sam never went out at night. He thought there was nothing to see. When the sun went down, he went to sleep. One night he went outside. The beautiful stars made him fall in love with the night forever.
 selected sentence: When the sun went down, he went to sleep.

Sam never goes about at night >Causes/Enables> The sun goes down and Sam goes to sleep