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: Tina saw that Beth had new shoes. Sentence2: She liked them so much she wanted the same ones. Sentence3: Tina asked her mom to get them for her. Sentence4: Her mom said maybe for her birthday. Sentence5: Tina was sad because she wanted them now.

Output: Beth, Tina, Her mom

Input: Consider Input: Sentence1: Joe hungered for power. Sentence2: He did anything and stepped on everyone to get to the top. Sentence3: As he was good at his job, it worked. Sentence4: He became very famous and had a lot of money. Sentence5: Now that he has power, Joe doesn't know what to do with his time.

Output: Everyone, Joe

Input: Consider Input: Sentence1: I visited a Facebook page accusing BLS of racism. Sentence2: BLS is short for Boston Latin School, a prestigious school. Sentence3: Several students wrote BLS fostered racism. Sentence4: I was a BLS graduate, and remembered racist incidents. Sentence5: I am preparing to add my comments to the page.
Output: I (myself), Students