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 cardboard box fell out of the sky and onto Kyle's head. The box fell out of a window, three stories above him. Kyle was going to return the box but was bitter about the event. He opened the box to see what was inside. It was a helmet.
 selected sentence: He opened the box to see what was inside.

A cardboard box falls on Kyle's head >Causes/Enables> Kyle opens the box