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: Sean was in a bad mood. Sentence2: And he realized that his room was a mess. Sentence3: He decided to clean up and organize everything. Sentence4: And his room looked beautiful. Sentence5: And Sean was in a bad mood less often.

Ex Output:
Sean

Ex Input:
Sentence1: Lisa had always wanted to try making jewelry. Sentence2: She started by creating some earrings. Sentence3: That inspired her to make even more. Sentence4: Lisa continued to make more earrings. Sentence5: She was happy that she was making jewelry.

Ex Output:
Lisa

Ex Input:
Sentence1: I landed this morning in Ibiza. Sentence2: It was beautiful, so I went for a walk on the beach. Sentence3: I walked past a group of kids playing volleyball. Sentence4: They invited me to join them. Sentence5: I decided to play, but didn't score any points.

Ex Output:
I (myself), Kids, A group