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: Last year Paul was about an inch too short for the big roller coaster. Sentence2: He was confident when he walked up to the measuring stick. Sentence3: Sure enough, he had grown well over an inch. Sentence4: He proudly got on the roller coaster. Sentence5: It was as much fun as he expected it to be!

Ex Output:
Paul

Ex Input:
Sentence1: My husband has decided he wants to be a stay at home dad. Sentence2: We don't have any kids. Sentence3: All we have is two cats. Sentence4: He plays with them all day and calls them Laurel and Hardy. Sentence5: I can't believe I married this man.

Ex Output:
Dad, My husband, I (myself)

Ex Input:
Sentence1: Hannah went into her garden. Sentence2: She saw a big, juicy, red tomato! Sentence3: Hannah picked the big tomato. Sentence4: She took it inside her house and sat down. Sentence5: Hannah cut up and ate the juicy tomato!

Ex Output:
Hannah