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: It was time for Timmy's first day of school. Sentence2: He was afraid because he didn't know what to expect. Sentence3: Timmy's mom told him how fun school would be. Sentence4: After that, he wasn't afraid anymore. Sentence5: When Timmy got home he told his mom how much fun he had at school.
Output:
Timmy's mom, Timmy