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: Jack was working on Mturks. He was working since 11 am. Since then, he has been working on and off all day. He made $100 in 12 hours. He was happy.
 selected sentence: He made $100 in 12 hours.

Jack was working on mturks >Causes/Enables> He made $100 in 12 hours