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: Jill had set a goal for herself in the seventh grade. Sentence2: She maintained the highest grades ever since then. Sentence3: She was determined to be valedictorian. Sentence4: When she became a senior, she still had that goal. Sentence5: At graduation, she met her goal and presented her speech.

Ex Output:
Jill

Ex Input:
Sentence1: Jill always sent her graphic designer instructions at the last minute. Sentence2: One day, she sent him a job that she needed by the end of the day. Sentence3: However, her graphic designer was out sick. Sentence4: The job didn't get done and Jill looked bad in front of the client. Sentence5: Jill never waited until the last minute again.

Ex Output:
Jill, Client, Graphic designer

Ex Input:
Sentence1: I got mad at my brother when I was three years old. Sentence2: I grabbed a chair and pulled it up to a pencil sharpener in his room. Sentence3: I methodically sharpened the pencil in the sharpener. Sentence4: I walked over to my brother and stabbed it into his forearm. Sentence5: He had a small piece of lead permanently imbedded in his arm.

Ex Output:
I (myself), My brother