Instructions: 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: Ross has crooked teeth. Sentence2: All the kids make fun of him. Sentence3: One day he gets braces. Sentence4: The kids do not make fun of him anymore. Sentence5: Ross loves his new smile.
Output:
Kids, Ross