Detailed Instructions: 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.
See one example below:
Problem: Sentence1: My dog was bored. Sentence2: I was working all day so I couldn't spend time with him. Sentence3: When I finished work I decided to play with my dog. Sentence4: He was so happy to finally have some fun! Sentence5: Alas, he fell sick and died.
Solution: I (myself), Dog
Explanation: There is only two characters in given story, i.e., I (myself) and dog.

Problem: Sentence1: Jason wanted nothing more than to be on top of everyone else. Sentence2: To achieve his ambition, he devoted all his hours to devise a plan. Sentence3: He worked on the plan for years, adjusting details every day. Sentence4: But after years and years of work, he still wasn't at the top. Sentence5: In the end, the plan was so complicated, he had to let it go.
Solution:
Everyone else, Jason