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: Tom took up the sport of golf in April. Sentence2: Soon he became frustrated that his golf score was not improving. Sentence3: He decided to seek the help of a golf pro from his club. Sentence4: The pro spent numerous hours with Tom working on fundamentals. Sentence5: Tom quickly shaved ten points from his handicap.

Output: Club, Golf pro, Golf, Tom

Input: Consider Input: Sentence1: Dean's roof was damaged in the recent wind storm. Sentence2: He decided to fix the roof himself. Sentence3: He worked on it for two weeks before he asked for help. Sentence4: His friend Max came to help Todd finish the roofing project. Sentence5: Together they finished the roof and it looked amazing.

Output: Max, Dean

Input: Consider Input: Sentence1: My goldfish barnacles was getting old. Sentence2: I took him to the vet and they said there was nothing they could do. Sentence3: Barnacles was dying. Sentence4: The next morning he was floating so I flushed him away. Sentence5: My heart misses him and will forever be away.
Output: I (myself), Vet, Barnacles