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: Terena needed an apartment in New York. Sentence2: First she got a broker. Sentence3: Next the broker asked a lot of invasive questions. Sentence4: The broker demanded three years tax returns. Sentence5: Finally, her application was approved!

Ex Output:
Terena, Broker

Ex Input:
Sentence1: Janet was dating her boyfriend for a very long time. Sentence2: They were doing really well but had their doubts. Sentence3: As time went on Janet decided that they should break up. Sentence4: She asked me for advice on how to do it, but I didn't have any! Sentence5: A few weeks later she broke up with her boyfriend.

Ex Output:
I (myself), Janet's boyfriend, Janet

Ex Input:
Sentence1: Tina got a special gift from her mother. Sentence2: It was a beautiful music box. Sentence3: When she opened it, it played music. Sentence4: Tina put it on her dresser. Sentence5: She wanted the music box to be on display.

Ex Output:
Tina, Mother