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.

Input: Consider 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.

Output: Charlie, Susan

Input: Consider 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.

Output: Sean

Input: Consider Input: Sentence1: Jenny got home and smelled an awful smell. Sentence2: She couldn't figure out what it was. Sentence3: She looked around the house. Sentence4: She suddenly saw her brother's gym bag. Sentence5: It was his stinky shoes.
Output: Jenny, Brother