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: 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.

Ex Output:
Christina, Charity

Ex Input:
Sentence1: James had two best friends who hated each other. Sentence2: He could never see them together but always apart. Sentence3: For his birthday, he made an exemption and invited them both. Sentence4: It was a gamble, but it worked. Sentence5: The two friends went over their disagreement for the sake of James.

Ex Output:
James, Best friends

Ex Input:
Sentence1: The car did not want to start. Sentence2: The driver looked around. Sentence3: The driver checked the dashboard. Sentence4: A light was flashing. Sentence5: The car needed new oil.

Ex Output:
Car, Driver