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.

Input: Consider Input: Sentence1: Annie had a test on Monday. Sentence2: She went bowling on Friday. Sentence3: She went to the mall on Saturday. Sentence4: She watched TV on Sunday. Sentence5: Annie failed her test.

Output: Annie

Input: Consider 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.

Output: Nita, Boss

Input: Consider Input: Sentence1: I bought a new television for the big game. Sentence2: The television got to my house just in time. Sentence3: All of my friends came over and watched the game. Sentence4: Many of them commented on my new television. Sentence5: I am happy with my new purchase and I want to buy another.
Output: I (myself), Friends