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: Gina was at the CVS near her home. She waited in line to purchase her candy bars. The woman in front of her was purchasing candy. As she spoke Gina recognized her voice. But the woman was gone before she realized it was an old friend.
 selected sentence: But the woman was gone before she realized it was an old friend.

Gina recognizes the woman's voice >Causes/Enables> Gina realizes the woman was an old friend