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: Jim taught English in a small school in China. Sentence2: He had a crush on the math teacher Mrs Wang. Sentence3: Mrs Wang had an abusive husband who beat her. Sentence4: One day, Jim beat up Mrs Wang's husband and told him to scram. Sentence5: Now Jim and Mrs Wang live together in the USA.

Ex Output:
Mrs wang's husband, Jim, Mrs wang

Ex Input:
Sentence1: Tim was going to drive a friend home. Sentence2: The friend had too much to drink. Sentence3: He couldn't get the friend's keys to work. Sentence4: The friend was too drunk to help. Sentence5: He had taken the wrong keys by accident.

Ex Output:
Tim, Friend

Ex Input:
Sentence1: Yvette was about to get married, but she needed a dress. Sentence2: She went to the dress shop with her friends. Sentence3: She tried on many dresses, but her friends didn't approve. Sentence4: Finally, she put on the perfect dress. Sentence5: Her friends approved and the bought in on the spot!

Ex Output:
Yvette, Her friends