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: Carey was very excited to be going to prom with Joe. Sentence2: He was normally a gentleman but he was drinking that night. Sentence3: Carey felt very uncomfortable and asked to go home. Sentence4: Joe got very upset and almost hit her in the face. Sentence5: Carey broke up with Joe the next day and felt good for being strong.

Output: Carey, Joe

Input: Consider Input: Sentence1: Christina converted to Islam when she was in college. Sentence2: Before she converted, she read a lot about Islam. Sentence3: She found out that Muslims should not have names like hers. Sentence4: Christina means follower of Christ which is not in line with Islam. Sentence5: Christina changed her name to Charity.

Output: Christina, Charity

Input: Consider Input: Sentence1: A long and busy morning wore Olive out. Sentence2: Olive was looking forward to taking a nap. Sentence3: She laid down in bed. Sentence4: A loud bark echoed through her room. Sentence5: Olive is not happy she has a pomeranian.
Output: Olive, Pomeranian