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: Jane was jogging. Sentence2: It had just rained. Sentence3: The ground was slippery with leaves. Sentence4: She slipped on one and broke her leg. Sentence5: She had to call an ambulance for help.

Ex Output:
Jane, Slippery, Broke, Rain, Ambulance

Ex Input:
Sentence1: Jackson decides to watch a professional baseball game. Sentence2: During the game he begins to feel hungry. Sentence3: He eats a hotdog and drinks a beer. Sentence4: After eating he feels too sleepy to watch the game. Sentence5: He goes home to nap before the game is half over.

Ex Output:
Jackson

Ex Input:
Sentence1: Tom had old tires on his car. Sentence2: They had become slick from too much use. Sentence3: It rained hard one night. Sentence4: Tom hydroplaned several times. Sentence5: Tom finally decided to get new tires.

Ex Output:
Tom