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: Leanna was the smartest student in her class, nothing was hard. Sentence2: She grew to become a conceited person based on her academical prowess. Sentence3: She loved that many of her friends were jealous of the attention. Sentence4: One day her best friend caught her cheating and told everyone. Sentence5: Her reputation was forever ruined and she wasn't considered smart.

Output: Her best friend, Her friends, Leanna, Class

Input: Consider Input: Sentence1: Patty often text messaged on her phone while driving. Sentence2: Her parents told her not to text and drive. Sentence3: Patty couldn't help herself and continued to text while driving. Sentence4: She wasn't paying attention and rear-ended another vehicle. Sentence5: Patty had to pay for the damages because she was at fault.

Output: Parents, Patty

Input: Consider Input: Sentence1: Samuel Braman came into the world under poor circumstances. Sentence2: His mother was 15 years old. Sentence3: She told the doctors she was addicted to meth and heroin. Sentence4: They took the baby early because of this. Sentence5: She treated him very badly from the beginning.
Output: His mother, Samuel braman