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: Barry took a science class. Sentence2: He didn't expect an essay. Sentence3: He took a test with one. Sentence4: He did his very best. Sentence5: Barry didn't do so well.

Output: Barry, Science class

Input: Consider Input: Sentence1: Nora went to the dentist this week. Sentence2: She was nervous they would find cavities because she had a toothache. Sentence3: Her fears were confirmed when they found two. Sentence4: The dentist told her she'd have to schedule follow up visits. Sentence5: She's getting fillings next Wednesday.

Output: Nora, The dentist

Input: Consider Input: Sentence1: Maddy was very clumsy. Sentence2: She tripped over everything and made people laugh. Sentence3: As she was very self-conscious, she tried to be careful. Sentence4: She took lessons to have more poise and walk with a straight back. Sentence5: Now, people look at her with awe and don't laugh anymore.
Output: Maddy, People