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: Jrue dealt with leg injuries throughout his career. Sentence2: He was finally healthy entering last offseason. Sentence3: He did a lot of leg strengthening exercises. Sentence4: He had a minutes limitation at the start of this season. Sentence5: He now plays heavy minutes without any issues with his legs.

Ex Output:
Jrue

Ex Input:
Sentence1: Kelli was injured on the job and couldn't work for a while. Sentence2: Because her bills continued to come in, she needed extra money. Sentence3: She joined a work-at-home site online to make some extra cash. Sentence4: Kelli really liked working on the site, and did a lot of hits. Sentence5: One morning she woke up to her first rejection and she felt crushed.

Ex Output:
Kelli

Ex Input:
Sentence1: Steve's dog barked at everything. Sentence2: The little terrier jumped and yapped loudly when anyone arrived. Sentence3: One day, a burglar approached the door, and the dog barked fiercely. Sentence4: The burglar was scared, and decided to not break into the house. Sentence5: The dog's barking had finally paid off.

Ex Output:
Steve, Dog, Burglar