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: Dean's roof was damaged in the recent wind storm. Sentence2: He decided to fix the roof himself. Sentence3: He worked on it for two weeks before he asked for help. Sentence4: His friend Max came to help Todd finish the roofing project. Sentence5: Together they finished the roof and it looked amazing.

Ex Output:
Max, Dean

Ex Input:
Sentence1: I have a daughter who loves to jump. Sentence2: She enjoys trampolines and bouncy houses. Sentence3: She has wanted to go to SkyZone for a long time. Sentence4: Sky Zone is pretty expensive, so she hasn't been able to go. Sentence5: Her friend is having a party at SkyZone and she is thrilled!

Ex Output:
I (myself), Daughter, Friend

Ex Input:
Sentence1: Laura went to a gym this morning. Sentence2: She wanted to lose weight. Sentence3: She used a stepper. Sentence4: She stepped wrong. Sentence5: She broke her ankle.

Ex Output:
Laura