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: There was a sad girl at the park. Everyone knew she was sad. One day a man walked up to her. He gave her a big hug. The rest of her day was better.
 selected sentence: Everyone knew she was sad.

A girl is sad >Causes/Enables> Everyone can tell a girl is sad