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 thought she was the best basketball player. Sentence2: She was convinced she would win the most valuable player award. Sentence3: She was excited for the awards banquet. Sentence4: Jill's coach did not call her name for the award. Sentence5: She was devastated.

Ex Output:
Jill, Jill's coach

Ex Input:
Sentence1: Paul had a problem with drugs. Sentence2: His Father was very concerned for him. Sentence3: He put him in a rehab center to get help. Sentence4: Paul stayed there for sixty days. Sentence5: He learned how bad drugs really were and never did them again.

Ex Output:
Paul, Father

Ex Input:
Sentence1: Jane was a vegan. Sentence2: She was asked to pick up bacon. Sentence3: She thought it would be fine to get vegan bacon. Sentence4: She was clearly wrong. Sentence5: Jane was never asked to pick up meat products again.

Ex Output:
Jane