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: Tom was ready to eat at the buffet. He ate as much food as possible. Then he went back for more. When he left, his stomach hurt really bad. He learned to never eat like that again.
 selected sentence: Tom was ready to eat at the buffet.

tom ate a buffet >Causes/Enables> his stomach hurt a bad