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: I used to deliver fliers everyday in the hot sun. Sentence2: My water bottle always ended up really hot. Sentence3: When I put ice in it, the ice melted. Sentence4: I decided to buy a special thermos that kept the cold in. Sentence5: Now I always had cold water when I was in the hot sun.

Ex Output:
I (myself)

Ex Input:
Sentence1: Charlie and Susan went on a date. Sentence2: They decided to eat at a nice restaurant. Sentence3: The two ordered a bottle of wine. Sentence4: Charlie ordered food for them both. Sentence5: The couple ate and drank and enjoyed themselves.

Ex Output:
Charlie, Susan

Ex Input:
Sentence1: Fariah was walking to school. Sentence2: A sudden gust of wind blew towards her. Sentence3: In addition, several of her papers broke loose from her bag. Sentence4: They landed in a small puddle. Sentence5: She quickly tried to pick them up.

Ex Output:
Fariah