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: Andrea was at the mall with her friends. Sentence2: She saw a soft hooded sweatshirt that she fell in love with. Sentence3: She didn't have much money and thought about stealing it. Sentence4: In the dressing room, she ripped off the tags. Sentence5: Then she tucked it away and hurried out of the mall.

Ex Output:
Andrea, Her friends

Ex Input:
Sentence1: Tom loved nuts. Sentence2: He was very frugal. Sentence3: He went shopping at the grocery store. Sentence4: He saw a huge discount on bulk walnuts for sale. Sentence5: He stocked up on walnuts.

Ex Output:
Tom

Ex Input:
Sentence1: Sandy's mom packed her a ham sandwich for lunch again. Sentence2: Frannie had a cheese sandwich that looked much better. Sentence3: She offered to trade her sandwich for Frannie's. Sentence4: Frannie agreed and they swapped. Sentence5: The were both happy with the trade.

Ex Output:
Sandy's mom, Frannie, Sandy, Were