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: Martha sat quietly on the subway as she waited for her stop. Sentence2: An elderly woman boarded the train and held onto the subway rail. Sentence3: Martha felt bad. Sentence4: She stood up and offered her seat to the elderly woman. Sentence5: The woman thanked Martha enthusiastically.

Ex Output:
Woman, Martha, Elderly woman

Ex Input:
Sentence1: One of my daughter's friends got married last weekend. Sentence2: One of her bridesmaids got into a fight that night. Sentence3: She hit her husband and he beat her up. Sentence4: She called the police and he was arrested. Sentence5: The fight overshadowed the wedding.

Ex Output:
I (myself), Husband, Bridesmaids, Daughter's friends

Ex Input:
Sentence1: Tom found a dog walking down the street. Sentence2: It didn't have any tags. Sentence3: Tom grew fond of it over time. Sentence4: He then saw a sign showing people were looking for it. Sentence5: Tom called the number and returned the dog.

Ex Output:
Dog, Tom