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: Erin was cleaning out his basement one morning. Sentence2: While he was cleaning it, he found an old antique watch. Sentence3: He searched on the internet to see what type of watch it was. Sentence4: He realized that it was a watch from the 1800s! Sentence5: He decided to put it on Ebay and he made a lot of money.

Ex Output:
Erin

Ex Input:
Sentence1: Barry was excited to take his daughter to the park. Sentence2: However, Barry figured since it was Sunday, it would be empty. Sentence3: Barry certainly guessed wrong! Sentence4: Barry decided to take his child to another nearby park. Sentence5: Barry was glad the park was empty, and he could play with his child.

Ex Output:
His daughter, Barry

Ex Input:
Sentence1: Stephanie is diagnosed with a rare disease. Sentence2: She's going to die within two months. Sentence3: She writes her will and has one last wish. Sentence4: For her money to be donated to research her disease. Sentence5: Stephanie accepts her death and her wishes are followed.

Ex Output:
Stephanie