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.

Example Input: Sentence1: Brittany was planning her wedding. Sentence2: She had been planning it for months. Sentence3: She had the dress and cake. Sentence4: She still did not have a venue. Sentence5: Brittany finally had a venue and her perfect wedding.
Example Output: Brittany

Example Input: Sentence1: Rucksack Rod was a traveling hobo. Sentence2: He got by on the kindness of others. Sentence3: The trains would often slow just enough for him to get on. Sentence4: While on the rails one day, he spied a girl who looked hungry. Sentence5: Rod shared what food he could with her.
Example Output: Rucksack rod, Girl, Others

Example Input: Sentence1: Jack's bathroom was dirty. Sentence2: So Jack decided to clean his bathroom. Sentence3: He cleaned the sink, toilet and tub. Sentence4: Reorganized the inside of his sink. Sentence5: Jack was glad he cleaned the bathroom.
Example Output:
Jack