Definition: In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Input: Sentence1: Gina was scowling at the new boy in her class. Sentence2: She held her face firmly as she waited for him to see her. Sentence3: But the boy wouldn't turn her way. Sentence4: She tried to remember why she was angry and keep her face screwed. Sentence5: But after 5 minutes she was tired of holding the mean face.
Output:
Boy, Gina