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: Remy was on a date with a girl he really liked. Sentence2: He was excited to get to know her. Sentence3: At the end of the night, he tried to kiss her. Sentence4: He accidentally feel and knocked her over. Sentence5: They didn't go out again.

Ex Output:
Remy, Girl, Remy's date

Ex Input:
Sentence1: Edward was lonely and wanted a girlfriend so he started dating. Sentence2: He went on a date with a girl named Joy. Sentence3: Edward liked her but she didn't like him so he got angry at her. Sentence4: Joy told Edward he had an anger problem and needed help. Sentence5: Edward discovered his anger prevented him from finding love.

Ex Output:
Joy, Edward

Ex Input:
Sentence1: A man celebrated his 50th birthday. Sentence2: He felt a little bit old. Sentence3: His kids called him old. Sentence4: It actually kind of hurt him. Sentence5: He decided to accept that fact.

Ex Output:
A man, His kids