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: Dina daughter Avery just turned two. Sentence2: Dina felt like she should put Avery in Daycare because of her job. Sentence3: She didn't trust Daycares and felt like she should be with Avery. Sentence4: One day after she picked up her daughter she heard something peculiar. Sentence5: Avery was singing her ABCs and Dina was pleased and felt at ease.
Output:
Avery, Dina