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: Everyone got together. Sentence2: They were celebrating Chris's 13th birthday. Sentence3: However, some of his relatives were arguing about money. Sentence4: One ended up being punched. Sentence5: Chris's father had to kick them out of the house.
Output:
Chris, Chris' father