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: Carl was playing videogames with a friend. His friend was a sore loser. Carl kept letting him win. At one point Carl beat him. Carl's friend became visibly upset over it.
 selected sentence: Carl kept letting him win.

Carl plays video games with a friend >Causes/Enables> Carl lets his friend win