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: Erica's eyes open as her phone begins to ring. Dave is calling. Erica frowns and touches a button. The phone goes silent. Erica rolls over and closes her eyes again.
 selected sentence: The phone goes silent.

Erica touches a button >Causes/Enables> The phone goes silent