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: Nancy had been unhappy in her marriage for many Year's. Sentence2: She knew it was time for a change, but she was afraid of being alone. Sentence3: Finally Nancy decided to divorce her husband. Sentence4: It was hard on both of them, but in the end it was the right thing. Sentence5: Now alone, Nancy is happy that she is no longer with her ex husband.
Example Output: Nancy, Nancy's husband

Example Input: Sentence1: Francis decided to do some baking. Sentence2: He couldn't decide what to bake. Sentence3: He thought about cookies, but decided not to. Sentence4: Finally, he made some croissants. Sentence5: They burned!
Example Output: Francis

Example Input: Sentence1: Anita always likes to clean the house on Sunday afternoons. Sentence2: She focuses on getting the kitchen clean. Sentence3: After cleaning the kitchen she works on the other rooms. Sentence4: When she is finished cleaning, she likes to have a glass of wine. Sentence5: Anita is proud of keeping a clean home.
Example Output:
Anita