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: John went to the bookstore. Sentence2: He looked up and down the aisles for an interesting read. Sentence3: After an hour of browsing he stopped in the classics. Sentence4: He picked up a book of Edgar Allan Poe's work. Sentence5: This was exactly what he was hoping to find.

Ex Output:
Edgar allan poe, John

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: I married a girl that I also work with. Sentence2: I thought it would be fun to see her all day every day. Sentence3: Soon I noticed that all our conversations were about work stuff. Sentence4: I asked her if we could talk about other topics when we are at home. Sentence5: She agreed that's a good idea and now we are much happier.

Ex Output:
I (myself), A girl