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: Greg loves running. One morning, Greg decided to go for a run. Greg felt great and was really enjoying his run. Toward the end of Greg's run, he tripped over a rock and fell. Greg ended up spraining his ankle when he fell.
 selected sentence: Greg loves running.

Greg tries running >Causes/Enables> Greg loves running