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: 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.
Example solution: I (myself), Dog
Example explanation: There is only two characters in given story, i.e., I (myself) and dog.

Problem: Sentence1: Tom decided he need to save more money. Sentence2: Tom cancelled his cable TV service. Sentence3: Tom also stopped eating out every other night. Sentence4: After several months, Joe looked at his savings. Sentence5: He couldn't believe the difference such small changes can make!

Solution: Joe, Tom