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.

Ex Input:
Sentence1: Carl needed to lose weight. Sentence2: He found it very hard since he loved candy. Sentence3: He decided he would stop having candy in the house. Sentence4: He found it much easier to lose weight this way. Sentence5: Soon, Carl was down ten pounds and didn't miss eating candy at all.

Ex Output:
Carl

Ex Input:
Sentence1: Nancy was very unhappy with the customer service she received. Sentence2: She couldn't find a manager to talk to though. Sentence3: Nancy was forced to go home angry. Sentence4: She posted on the company's website about her experience. Sentence5: A manager who saw the post, contacted Nancy to help fix the issue.

Ex Output:
Manager, Nancy

Ex Input:
Sentence1: Shelly was backing her car into the garage. Sentence2: She didn't estimate the distance from her car to the garage correctly. Sentence3: Shelly backed into the garage. Sentence4: She broke the tail light on her car. Sentence5: Shelly had to buy a new tail light.

Ex Output:
Shelly