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.

Example Input: Sentence1: Skip is has a miserable marriage. Sentence2: He asks his wife for a divorce. Sentence3: She agrees. Sentence4: They both sign divorce papers. Sentence5: Skip is finally divorced from his wife.
Example Output: Skip, Wife, Divorce

Example Input: Sentence1: Sara wanted to make her community more eco-friendly. Sentence2: She started a recycling program. Sentence3: There, she taught people how to recycle various types of items. Sentence4: Soon her neighbors were recycling almost everything they could! Sentence5: Sara felt very good about her environmental impact.
Example Output: Sara, Her neighbors, People

Example Input: Sentence1: The family was on a boat. Sentence2: They were going on a dolphin cruise. Sentence3: As soon as they took off, they saw several of them! Sentence4: The dolphins chased them and jumped out of the water. Sentence5: They took lots of pictures of the animals.
Example Output:
The family, Dolphins