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: We were snowed in during the blizzard of 1978. We did not go out for 3 days. On the fourth day we walked to Chinatown, which was surprisingly open. We bought some roast duck. We had a nice dinner that night.
 selected sentence: We bought some roast duck.

 We go to the store >Causes/Enables> We buy duck