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: Charles didn't like how his preacher skipped around the Bible. Sentence2: Charles thought the Bible should be read from beginning to end. Sentence3: He made a plan to read the whole Bible in 30 days. Sentence4: He read in the day and listened to Bible readings on youtube at night. Sentence5: He read through the Bible in 30 days and impressed his preacher.

Ex Output:
Charles, His preacher

Ex Input:
Sentence1: Tom had jealousy issues. Sentence2: He found his girlfriend with a strange guy. Sentence3: Tom confronted them both in an angry fashion. Sentence4: They tried to explain to Tom that they were just cousins. Sentence5: Tom knew they were lying.

Ex Output:
Girlfriend, Guy, Tom

Ex Input:
Sentence1: A friend of mine met a man on the web from Africa. Sentence2: He was friendly, charming, handsome and she fell head over heels. Sentence3: He promised to love her, marry her and care for her kids. Sentence4: She sent him a lot of money on the promise he would marry her soon. Sentence5: When she ran out of money he changed his number.

Ex Output:
Friend, Man