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: Jimmy had a graduation party after the ceremony. Sentence2: He invited his friends and family for dinner. Sentence3: Before they ate, he said that all of his success is because of his mom Sentence4: However, his girlfriend walked out of the house. Sentence5: She told him that he was unappreciative of her.
Output:
Girlfriend, Jimmy, Friends, Mom, Family