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: Debra was looking for her cat. Sentence2: Sam said she'd help her. Sentence3: The cat was on a tree. Sentence4: Sam climbed up the tree but fell. Sentence5: The cat jumped down the tree.

Output: Her cat, Sam, Debra

Input: Consider Input: Sentence1: When I was a kid there was a lake near my house. Sentence2: Every afternoon I would go outside and throw rocks into the lake. Sentence3: Sometimes there would be ducks in the lake. Sentence4: My parents would always tell me to be careful and not hit the ducks. Sentence5: I really miss living by that lake and seeing those ducks!

Output: I (myself), My parents, Ducks

Input: Consider Input: Sentence1: Jon wanted to go to Paris but didn't have enough money. Sentence2: Jon decided to start a side business so he could get the money. Sentence3: He started a car detailing business and worked on Saturdays. Sentence4: At first, Jon didn't make much money but he slowly got better. Sentence5: Eventually, Jon had enough money to go to Paris!
Output: Jon