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: It was time for Nita's annual performance review. Sentence2: She was very nervous! Sentence3: Her boss called her into his office. Sentence4: Then he told Nita her performance was great this year! Sentence5: He even gave Nita a small raise.

Ex Output:
Nita, Boss

Ex Input:
Sentence1: Bob love to eat steak. Sentence2: He wants to get steak for an upcoming barbeque. Sentence3: He went to the store but he couldn't find any steak. Sentence4: He continued searching but he still didn't find any steak. Sentence5: His son brought enough steak for everyone for the barbeque.

Ex Output:
Bob

Ex Input:
Sentence1: Snow fell on my sidewalk overnight. Sentence2: I had to wake up early to shovel it all. Sentence3: My neighbor saw me and walked over. Sentence4: He told me that it would be nice if I did his sidewalk too. Sentence5: I laughed in his face and went back to shoveling.

Ex Output:
I (myself), My neighbor