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: 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.

Ex Output:
Charlie, Susan

Ex Input:
Sentence1: Neil was in his mother's attic. Sentence2: He found a shoebox full of old family photos. Sentence3: Neil went to a copy service. Sentence4: He made several copies of all the pictures. Sentence5: Neil shared all the pictures with his family.

Ex Output:
Neil, Family, His mother

Ex Input:
Sentence1: Stacy saw new neighbors were moving in. Sentence2: She went over to introduce herself. Sentence3: The neighbors were very rude to her. Sentence4: She felt embarrassed and went home. Sentence5: Every time she saw them outside after that, she looked away.

Ex Output:
Neighbors, Stacy