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: A man loved milk so much he bought his own cow. The cow made so much milk that the man sold off the extra. With the extra money the man bought another cow. Now the man used some of the extra milk to buy a gold watch. Every time he checked his watch he thanked his cows for the milk.
 selected sentence: With the extra money the man bought another cow.

A man sells milk from his cow. >Causes/Enables> He uses the money to buy another cow.