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: Barry recently had to take a reading test for college. Sentence2: Barry was nervous, as he did not know what was on the test. Sentence3: However, as Barry was taking the test, he realized how much he knew. Sentence4: As the test went along, Barry felt more confident about it. Sentence5: Barry knew that he had passed the reading test he took.

Ex Output:
Barry

Ex Input:
Sentence1: George was a clown who enjoyed to make children smile and laugh. Sentence2: He would make the quirkiest of balloon animals and pass them around. Sentence3: Many families hired him to perform at their children's birthday party. Sentence4: George was grateful for his skills as a party clown. Sentence5: He loved to perform and would do it until the day he died.

Ex Output:
Families, George, Children

Ex Input:
Sentence1: Kate and her friends had been kicked out of a club in Vegas. Sentence2: Her friends wanted to go to another club. Sentence3: Kate wanted to go to sleep. Sentence4: But it was her fault they were kicked out of the club. Sentence5: So she decided to keep quiet and go to the next club instead.

Ex Output:
Friends, Kate