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: Betty was five Year's old and loved to go to restaurants. Sentence2: Every weekend she would beg her mother to take her out to eat. Sentence3: One weekend, her mother took her to a Mexican restaurant. Sentence4: Betty ordered something that was too spicy for her. Sentence5: For many weeks after, Betty did not ask to go out to eat.
Output:
Betty